Questions tagged [series]

In the case of an electronic circuit, series refers to components connected in such a way that current must pass through each in a single path.

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Why are the two resistors in parallel? They are next to each other, so they should be in series, right? [closed]

Why are the two resistors in parallel? They are next to each other, so they should be in series, right?
LucyRoseM's user avatar
1 vote
2 answers
61 views

When wiring batteries in both series and parallel to increase the V and Ah, is there a difference between series-parallel and parallel-series?

For example, to create a battery pack of 24 V and 24 Ah from four 12 V/12 Ah batteries what would be the difference in following two wrings. Figure A: First create 2 series strips of 24 V/12 Ah and ...
eee's user avatar
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3 answers
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If I connect 3 12V batteries in parallel to eachother, then connect them to the load, am I connecting to the Load in parallel or series?

I have 3 12V batteries. I have connected the 12V batteries in parallel to each other. I have 1 positive lead and 1 negative lead coming off to my motor. Am I connecting to that motor in parallel or in ...
RB96's user avatar
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8 votes
4 answers
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Can I stack optocouplers in series to make a higher specification part?

Yet again I'm working with the sub-set parts the PCB assembler house has pre-loaded, and not what is commercially available. Like using 3-6 resistors in place of 1, and more relevant to this question; ...
user5211's user avatar
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12V and 24V battery system with charging

I am trying to make an electrical system for an automotive application. We have two 12V batteries. The car itself will run at 12V, all ECUs and components will operate here. The starter motor, however,...
MerlinsHat's user avatar
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2 answers
144 views

Controlling 230V LEDs with a single Z-Wave switch

I am trying to control two 100W LED security lights via a motion sensor. The motion sensor is a Philips Hue and runs on the Zigbee network, the LED’s are 230V. I have purchased a Raspberry Pi and ...
en_passant's user avatar
1 vote
1 answer
74 views

What is the simplest way to wire two resistors to be controlled by one switch to have three possible resistances and an off position?

There is very little space in the equipment's cabinet. Just enough space for two power resistors and one switch. Can a switch like this be wired to for example provide (using two 50Ω resistors) ...
d ata's user avatar
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Connecting 2 LED strips and 1 driver

I have the following things: 1 5w 3in1 LED strip 1 10w 3in1 LED strip 1 20w 3in1 Driver The driver has 3 wires in output, 2 in input. The LED strips each have 3 ...
Sevil Dubariya's user avatar
1 vote
2 answers
111 views

Voltage distribution with two batteries [closed]

I have a question regarding a simple circuit of two batteries (9V) in series with a single resistor connected to the outer contacts to prevent a short. When I'm simulating this circuit, a current also ...
olympus_mons's user avatar
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1 answer
65 views

Voltage drops across a series circuit

How come when I hook up two 10M resistors in series with a input voltage of 12 the two resistors only read 3V each? Should it be closer to 6V each?
Matt Persichetti's user avatar
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1 answer
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Selecting Balancing Resistors for HV Capacitor Bank

I am constructing a High Voltage (150 kV DC) capacitor bank. I have elected to connect 10 capacitors in series, with 10 such branches connected in parallel. My next mission is to create balancing ...
Wyll Astarion's user avatar
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Charging 4 parallel banks of 4 in series LifePO4, 16 total batteries. that have been top balanced

16 each LifePO4 batteries. 12.8Vdc 300Ah (Jita), an alleged internal BMS, charge by four SunGold Power SP6548 inverters, configured so two are providing 120VAC for phase 1 and two are providing 120VAC ...
Gary Fuller's user avatar
7 votes
2 answers
621 views

Understanding this linear series-pass regulator circuit

Please refer to the schematic extract above which is the positive half of a bipolar voltage regulator in an amplifier. It is a mostly classic design but there is a part I don't understand. The part I'...
Joe's user avatar
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1 answer
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Series regulator with op-amp damaging power transistors

Hello my name is Juliana, I am facing a problem with my project for a 2A linear adjustable power supply When it is configured with a voltage lower than 65V and current higher than 1.3A, the power ...
Juliana Laboratory's user avatar
1 vote
1 answer
132 views

Battery configuration, simultaneously in parallel and series

Can someone please explain to me what would happen here? If you take two 12 V 1 Ah batteries and simultaneously connect them in series and parallel with diodes to prevent the shorts. At the ends you'd ...
biroshima's user avatar
2 votes
2 answers
551 views

How can I switch two capacitors from parallel to series?

I am trying to find out how many poles I will need in a switch to switch the circuit from A to B: I was able to do it with 4 switches. Is there a simpler solution?
Michal Podmanický's user avatar
2 votes
5 answers
334 views

Does current prefer to take a series path over a parallel path?

simulate this circuit – Schematic created using CircuitLab Based on the simulation I have done, current here prefers to take the C1 - R2 path first and once C1 is saturated and cuts off it then ...
Dan's user avatar
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4 votes
7 answers
589 views

Zener Transistor regulator cascaded into 3-pin IC regulator

So I have a 48 V supply and want 5v output at sub 100 mA. The 78L05 is a super low cost 3-pin voltage regulator, but has a maximum input voltage of 30 V. I was wondering if it is a cost effective / ...
learnvst's user avatar
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2 BMS in Parallel connected to 2 batteries in series

This circuit is for charging the two batteries only. The LED board will run on 3.7 volts, but 7-8 volts does not affect the function of the LED board. With this circuit, the LEDs will stay bright ...
Noel Trudeau's user avatar
6 votes
3 answers
2k views

Why is it impossible to connect these two doorbells in series or parallel?

I have: one 220 V AC -> 10 V AC transformer one push-button switch (at the door) two bells for two different places of the house; they should ring together when the (single) door push-button ...
Basj's user avatar
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2 votes
6 answers
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Can you connect multiple PCBs in series?

If we have 3 PCBs connected in series (i.e, negative terminal of one is connected to positive terminal of the next PCB), and this is connected to a 36 V DC supply, can we assume the voltage drop ...
necro's user avatar
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1 answer
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Multiple EMF sources in a parallel circuit, semantics

Simple question, really. Need some clarity on parallel vs. series-opposing circuits. V1 is an automotive gen/alt, assume 80A max output. BAT1 is a lead-acid battery. V1 is charging the battery and ...
Bob Duncanson's user avatar
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0 answers
28 views

LED/Resistor set up for a model display

I am currently making a scaled model display that uses 16 LED in a series and I would like to wire it up to be on one switch, so I need a single power supply to connect them to. I have various ...
Micah Riordan's user avatar
1 vote
1 answer
47 views

Using power supplies in series, with one power supply also powering more loads

I have some old solenoids that operate at the unusual voltage of 72VDC. I'm powering them with a 48V and a 24V power supply in series (and controlling them using an Arduino with MOSFETs and the ...
iii's user avatar
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4 votes
3 answers
469 views

Its possible to link a group of 1/4 W resistors as an alternative to a resistor with a high power rating (1.25 W)?

I have 10 resistors. Each one is 10 Ω. Is it possible to reach 3.3 Ω with a power rating of 1.25 or 1.5 W? I tried to get 3.3 Ω by linking in parallel (3 resistors), but the power rating is not high ...
Pcp115's user avatar
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1 vote
1 answer
119 views

What is the exact definition of whether resistors are in series or in parallel? [duplicate]

Is there generally any easy way how to say whether resistors are in series or parallel? Sometimes, I have trouble understanding whether resistors are in series or parallel and then I start doing ...
Filip's user avatar
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0 votes
2 answers
123 views

Why am I seeing weird behavior with LED bulbs in old light fixtures? [closed]

I have two light fixtures on my front porch. I believe they're from the late 60s, when the house was built. I believe they're wired in series since removing one bulb causes the other to stop working. ...
Ben Martin's user avatar
-1 votes
6 answers
309 views

Proof of formula for resistors in series? [closed]

FACT: When resistors \$R_1\$ and \$R_2\$ are connected in series, they can be replaced by an "equivalent" resistor \$R_1+R_2\$ (in the following I am using \$R\$ and subscripts to denote ...
kehagiat's user avatar
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In a battery grid why does the overall equivalent amf remain the same as the equivalent emf of a single branch and not the resistance?

The Battery grid as shown in the picture above. When we write down equivalent resistance and emf of each branch { for N such batteries in each branch} then, [ In this step the battery grid is reduced ...
IKSHAVAKU's user avatar
1 vote
1 answer
109 views

How to find the equivalent inductance of this circuit?

In the image that is given below, I am not able to figure out which is in parallel or in series to what as they are all almost connected to each other. Also, it was given that all inductors are 1mH. ...
RK Eshat's user avatar
  • 143
1 vote
1 answer
213 views

What is the resonant frequency?

I know the formula of resonance frequency for both series and parallel circuits. But when we have a circuit that is shown in the image below where the RESISTOR and INDUCTOR are in parallel and their ...
RK Eshat's user avatar
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3 votes
4 answers
817 views

Is it viable to connect multiple ESC units in series?

I am designing a system that requires a large number of low-power motors in a weight and space constrained application. We have a high voltage power source of 400 V DC, that needs to run these motors ...
Mumbles's user avatar
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1 vote
2 answers
110 views

Can you connect different renewable energy power sources with equivalent power ratings in series and/or parallel?

You should be able to connect multiple solar panels of the same voltage and watt rating in series and/or parallel. What about connecting two different power sources with equivalent (or similar) ...
formerlolz's user avatar
2 votes
2 answers
190 views

One battery in series never fully charges

I have two 12 V 110 Ah Eco Tree (LiFeP04) batteries wired in series with both batteries having the following technical specification: Built-in BMS: Yes Nominal voltage: 12.8 V Nominal capacity: 110 ...
A Dark Divided Gem's user avatar
2 votes
0 answers
73 views

How to use a BLDC motor, solar panels and batteries efficiently [closed]

I have a 48V 1800W BLDC motor, 4X 12V lead acid batteries and 4X 100W 12V solar panel. My question is, can we use those 4 lead acid batteries when connected in series to power the BLDC motor? If the ...
V Karthik's user avatar
0 votes
3 answers
142 views

Twenty-two 3 V LEDs in series with 9 V power supply

I am wiring twenty-two 3 V mini LEDs in series. I cannot find any other values for these LEDs. What resistor value I would need using a 9 V power supply?
Reaper161's user avatar
-2 votes
2 answers
150 views

Measuring peak voltages on two resistors in series using an oscilloscope [closed]

A circuit consisting of a function generator that produces a sinusoidal voltage, and two resistors R1 and R2 connected in series is set up according to the image. An oscilloscope is used to measure 3 ...
Even Sten's user avatar
0 votes
1 answer
113 views

Trying to make a 4100mAh, 47.4Wh battery for handheld PC

Stumbled across this site when searching for some info.. I'm hoping that one of you kind people will be able to help me. I have an Aya Neo Pro handheld gaming PC, and the battery has died. The problem ...
Lee C's user avatar
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0 votes
1 answer
109 views

Connecting multiple DC motors together to charge a 12 V battery

I have five small DC motors all rated for 12 V. I am trying to get them all connected together so it will act as multiple wind turbines and charge a battery. However, I am very new to electricity ...
Evan Sykes's user avatar
0 votes
2 answers
117 views

Need help understanding the basics of electronics

I would like to state that I'm a beginner in learning electronics by reading my first book on electronics I'm lost and would like some help. I even included an image that would hopefully help my case. ...
Fesudin Sarke's user avatar
0 votes
4 answers
105 views

Is this a series or parallel circuit? Why? [closed]

I don't understand if this is a series or parallel circuit.
ilytothemoonandback's user avatar
0 votes
2 answers
284 views

Equivalent impedance of a circuit

I'm trying to figure out the equivalent impedance of the right side of this circuit (so the capacity, inductance and right resistance) : I see this result in the solution of my exercice: But I don't ...
c.leblanc's user avatar
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0 votes
1 answer
57 views

How can I power a bulb filament with a mixture of series and parallel circuit?

I am trying to power a bulb filament that has a rating of 3.0 V and 2.5 A. First I made sure the filament worked by powering it with a variable power supply and setting the voltage at 2.5 V: This was ...
import_hill's user avatar
4 votes
3 answers
2k views

If batteries are arranged in series in a closed circuit (I.e. with a load, which is constant) why doesn’t the current increase when voltage does?

I guess people have asked slightly similar questions to mine before, but I still haven’t been able to find a complete answer as to WHY the current doesn’t increase even when the voltage in a circuit ...
Princess Quack's user avatar
2 votes
1 answer
363 views

SMPS transformer datasheet specifics

Here is an excerpt from a typical ferrite switching transformer datasheet: This happens to be the Wurth 750311771. Questions: Two standard primaries are depicted on the left. This datasheet implies ...
rdtsc's user avatar
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0 votes
2 answers
3k views

Calculating the voltage dropped in a series/parallel circuit

I’ve been trying to figure out a way to solve this problem to no avail. I think it’s got to do with a voltage divider or voltage dropped. I’ve seen a number of questions on this topic but never one ...
Tasha's user avatar
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0 votes
3 answers
899 views

Are two capacitors connected together considered to be parallel or series?

If both ends of two capacitors are connected to each other but in such a way that the positive end of one capacitor is connected to the negative end of another capacitor, do we say that the capacitors ...
RK Eshat's user avatar
  • 143
-1 votes
2 answers
299 views

Can I use two voltage regulators connected in series?

For my project I'm using 2 regulator, 8V (UBEC) and 5V (LM2596). What is a better idea, connect them in series or parallel?
Alfonsus Giovanni's user avatar
0 votes
3 answers
321 views

Why does voltage end up dropping in a voltage divider circuit?

Consider the following situation - A simple series circuit with a 10 V power source and two 5 Ω resistors I know that a voltage drop of 5 V would occur at each resistor due to Ohm's law and the ...
Kryptic Coconut's user avatar
0 votes
2 answers
85 views

Add additional LED to illuminated momentary power switch

I am using a microcontroller-based 5V input, 5V ouput power-switch (PetrockBlock) for my Raspberry Pi project. It provides pins for a power switch and for a power status LED. I am using a momentary ...
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