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Questions tagged [split]

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0answers
18 views

Split Power Plane when using Load Switches?

To do power saving for a battery operated product, I am using couple of load switches to shut down peripheral power when not using that. PCB stackup - Signal(component), Gnd, Power, Signal -- 4 ...
0
votes
1answer
44 views

asymmetric signal split at SMA Tee (wires of different lengths)

I set up a circuit, as shown in the schematic below, to see firsthand how the signal paths of different lengths could lead to a phase difference. I am using an SMA Tee and there is no reason to ...
1
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1answer
111 views

RF Splitter/Combiner with vectors in phase and antiphase - Where does the power go if they cancel?

Updated I have a RF splitter/combiner. I am focusing on the black and red vectors. (Picture attached) When the black vector of 0.25V and 0 phase enters the box, it will split. 1/sqrt(2)*0.25V at 0 ...
1
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2answers
67 views

USB power split

I want to connect 2 devices to one USB. Device #1 is a small audio DAC with USB A male connector. Device #2 needs only power. The question is, do I need to do a special separation for that or this ...
0
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1answer
28 views

AC Power Splitter and Regulator

Is there a charging cable which splits into two? One of the split cable will have DC 12v 3a with a male coaxial 5.5mm x 9.5mm The other split cable will have DC 5v 3a with a USB Micro. Does this ...
0
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1answer
131 views

Blocking DC power to active GPS antenna

I would like to connect two GPS receivers to a single active antenna letting the DC voltage form only one receiver to reach the antenna. In this blog post the guy made his own RF part by putting a ...
0
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0answers
43 views

Split supply common-emitter [duplicate]

Please assist me with this design problem Design and construct a single stage common-emitter amplifier with the following characteristics:  The voltage gain should be at least 100V/V;  The input ...
1
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1answer
88 views

Splitting Audio Out - are there any issues I am not seeing?

first post, so I hope this isn't TOO stupid a question. I am planning on building this circuit: https://github.com/trash80/Ym2149Synth/blob/master/Ym2149SynthSchematic-V29082016.pdf which eventually ...
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0answers
44 views

Automatic Split Input To Multiple Chargers

I am searching for days now but I cant find something equivalent to my question. To make things clear I will explain how things work first: I have a solar panel as an input and 3 individual ...
1
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2answers
421 views

NMEA via RS232 and PPS (TTL) splitter

I have GNSS device that outputs NMEA messages via RS232 PPS signal via a digital out (TTL) I need to distribute both the RS232 and the PPS signal to more than 1 system (currently 3, but could be ...
0
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1answer
235 views

A question about splitting a regulated power supply by resistors vs discrete components

Assuming the source voltage Vs is regulated in below diagrams, is there any advantage of using this rail-splitter topology: instead of this simple one?: Is there any good reason or scenario which ...
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3answers
4k views

How to make a split-supply from a single supply by using two linear regulators like LM7812 & LM7912?

I want to obtain +-12VDC supply from a 24VDC supply where the total load will driver 100mA max. I tried using two power supplies but one of them blew up. I need the split supply for excitation voltage ...
2
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1answer
725 views

How many times can you split the 3.5mm audio line cable signal from a music player

How will the volume of the sound decay as you iterate the splitting of a 3.5mm audio line cable signal from a music player?
-3
votes
1answer
453 views

Problem in using a buffered virtual ground as opamp split supply [closed]

The single-ended to differential converter on the right side works fine in sim only if I set opamp rails Vcc=12V and Vee=-12V as split supply. But if I supply the circuit by using 24V supply and a ...
1
vote
2answers
237 views

Splitting induvidual WS2812B LEDs

My motherboard has a WS2812B header for use in addressable RGB LED strips. However I am not using them for those strips, as instead I would like to use the signal to separately control several other ...
-1
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1answer
112 views

How to split cable? (5V 5A Power Supply) [closed]

I have a 5V 5A DC power supply. From this power-supply I want to power 6 seperate 5V devices, which aren't connected in any way except the common power-line. My understanding is that I simply can ...
1
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2answers
2k views

How to split voltage from a DC power supply?

Given a 12V 4A DC power supply that's connected from a wall outlet to a V59 Universal LCD Controller, can the voltage be split from this power supply to power another device with 5V 1200mA power ...
2
votes
2answers
231 views

How to split 5V USB input into 4 rails (+/-5V, +/-15V)? Problem with combining two virtual grounds

Problem: I have 5V input from USB, I need to split it into four rails with +/-5V and +/-15V. Currently done: I have built the following circuit in a breadboard. I have measured the outputs with a ...
2
votes
1answer
704 views

Single symbol for split voltage source in LTspice

Below is how many people make a +/-15V split-supply in LTspice: But this takes too much time each time to select 3 components GND and give them values one by one, etc. So I was wondering if there is ...
1
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1answer
187 views

RF Switch or Splitter to test multiple DUT

The task is to test multiple DUT's (sequentially) for Transmitter & Receiver testing in multiple unlicensed frequency bands supported by the DUT. I could connect a single RF Signal Generator to 2 ...
5
votes
1answer
434 views

Why 3v3 should be connected to the center point of Ethernet termination?

I am designing an 10/100 Ethernet on my board and I can't understand why 3.3V should be connected to the center point of the termination. The schematic checklist recommends it actually and I checked ...
0
votes
1answer
74 views

Could GaAs reflective-open SPDT be used as RF signal spliter?

In my schematics GaAs SPDT switch is used to feed two ICs in turn from single signal source. Switching between two signal destinations is made by applying opposite voltages to two SPDT control pins - ...
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4answers
204 views

Loading effect question about transformers used in split-supplies

This question is about designing a split power supply from a transformer and a rectifier. I'm trying to understand why a full-wave bridge rectifier with a center-tapped transformer is not affected ...
0
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2answers
227 views

Splitting DC Supply Rail with High Output Currents

I'm currently working on a audio amplifier circuit that requires split supply rails. I have a wall converter that can supply 19V, and I ideally want to be able to create a ± 12V supply rail out of the ...
0
votes
2answers
231 views

IC which can drive an RGB input to two outputs

Is there a way to duplicate a wire from an RGB source without degrading the signal. I wish to take a wire and split it into two wires without the current halving. (edit) 75 ohms and one RGB signal ...
0
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3answers
198 views

Splitting voltage and current unevenly

I want to make my lab variable power supply from an old laptop power adapter (19V 6A) with an LCD to show Volts and Amps. The LCD needs an independent powersupply. Can I make a circuit to give me the ...
1
vote
1answer
218 views

Using different termination types on CAN bus

Is it possible to terminate one end of a CAN bus using Standard termination (single 120 ohm resistor across CANH and CANL) and the other end using Split termination (two 60 ohm in series with a ...
0
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2answers
350 views

A question on making a simple split power supply

I'm planning to make a variable split power supply from a 9V DC adapter. So far I found two easy approaches. One is with a 555 timer here: Making dual power supply from single for opamp? And the ...
3
votes
1answer
3k views

how to split audio with buffers?

I am split an audio signal coming from an op amp to both a line driver buffer and a VU meter buffer, as shown in the schematic. My trouble is in determining the correct placement and value of ...
0
votes
1answer
534 views

composite (RCA or A/V jack) output Passive splitter

Im trying to connect one CCTV camera feed to a TV and an USB composite encoder at the same time. my question is, would something like this do it? I have doubts about impedance issues, in which case ...
2
votes
2answers
310 views

High Current Split Supply

I am looking for a way to construct a 1 A, ±15 V split-supply. So far, I've seen a number of designs for split-supplies (http://tangentsoft.net/elec/vgrounds.html), but they are all low current (i.e. ...
2
votes
1answer
145 views

AC adapter splitter

I'd like to power 2 or more devices (all requiring the same voltage) with a single AC adapter, instead of using multiple adapters. Is it safe to use one of these splitter cables? In my case, i have: ...
2
votes
2answers
2k views

How to mix to video sources into a split screen (two inputs, one output)

I want to build a circuit for my car (It has two cameras, front and rear) that shows me the front and rear camera in the same screen (splitted), top half the video from the front camera and bottom ...
0
votes
1answer
2k views

Splitting Digital RGB Signal Line to multiple LED strips

I am trying to connect multiple strings of WS2812B RGB LEDs to the same signal line (so that they will all behave the same way, display the same colors, etc). The WS2812B is very time sensitive, so I ...
2
votes
2answers
830 views

Can I use MAX232 instead of a ICL7660 to make a split power supply?

For an opAmp rails I need positive and negative voltages i.e. Vcc, Vee. I look for a good IC which is commonly used for creating split power from a single power supply. Many recommends ICL7660. I ...
6
votes
2answers
2k views

Is it safe to implement a split power supply from two identical AC/DC adapters? [duplicate]

If I have two identical AC/DC adapters(Such as laptop adapters) can I achieve this as in the following illustration? Would it be safe?:
1
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1answer
977 views

Is there an IC to make a split power supply from a single power supply? [duplicate]

I'm trying to find the easy but a somewhat stable way to create a split power rails Vcc Vee for the opAmp applications. Any specific known IC for this purpose?