Questions tagged [spdt]

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2answers
53 views

Dual batteries changeover circuit to avoid power loss

I have a similar question to the one here How to create automatic dual battery changeover/switching circuit for uninterruptible power?, but would prefer to use a mechanical switch (eg a rocker switch)....
0
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1answer
93 views

How to properly drive parallel analog switches (variable capacitive loads) with opamp(s)?

So as you can see I have 16 SPDT switches on one side of my 16 'RUT paths' and 16 SPDTs on the other side. Each SPDT(ADG1434) has two source pins (SXA and SXB) and a common drain pin (DX), 'X' ...
0
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0answers
33 views

Signal routing to power amp LM1876 based on TS5A22362 SPDT

Has anyone ever used the TI's TS5A22362 CI to route audio? I though of implementing the circuit below on which I intend to use the same supply voltage to switch between normally closed and normally ...
0
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1answer
33 views

Relay to electronic switch change

I would like to change relay functionality in electronic switch. As per the concept, relay pole and NC position is short even there is no power applied to it. I need complete exact relay functionality ...
2
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0answers
35 views

Feed protection to the Mosfet drains

I have a machine running three 12v solenoid coils. Currently, control is carried out by manual switching of the negative through SPDT toggle switches. The coils all have a positive 12v common. I am ...
1
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1answer
72 views

Powering multiple led strips by one switch

I have a problem I cannot figure out. I have this circuit which should control two LED strips either by wemos OR (methods are switched between by SPDT because I don't know automatic way) manually. ...
0
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1answer
82 views

Dual led and transistor 3906 3904 switching with spdt switch on and off toggle help

Hi i have 3904 and 3906 transistors, leds and spdt switch. I tried to use the 3904 so that when voltage is applied to base, it flow from power source into the led and then to ground. But now i have ...
0
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1answer
81 views

Brushed DC motor braking with speed controller

I've been getting some amazing info on this site so thanks for all the info so far! Onto my question. I know I can brake a dc motor by shorting the terminals but I also know how much current that ...
0
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1answer
58 views

How to use a SPDT with no negative capability for audio signal routing?

I have a couple of SGM3005 chips and want to use them as switches in an audio circuit, but they don't support negative signals. The classical solution would be to bias the COM1 input, right? But, what ...
-1
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1answer
62 views

Night light circuit wih switching bulbs

How can I connect a night light circuit such that one bulb is lit up on a sunny day and one is only lit up at night so that the two lights don't light up simultaneously? Also, can I use a SPDT switch ...
0
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1answer
37 views

Finding an analog switch IC (BBM & SPDT) for video signal

I'm looking for a SPDT analog switch IC with Break-before-make to switch between video signals. However, the amount of options available leaves me overwhelmed with no clear option in sight. I've ...
0
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1answer
84 views

Light switch with 3 SPDT switches?

In the below circuit, I have two switches that can turn the light on or off from those two locations. Any 'switch' will turn the lights into the opposite position: How could a circuit be made to ...
0
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2answers
399 views

Powering a solenoid valve with a relay and no external power source

I have a solenoid valve (12VDC, 540mA) that I would like to control with a 12VDC relay (15A SPDT). Is it possible to power the solenoid without an external power source seperate from the one powering ...
0
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0answers
60 views

How to make a solid state SPDT switch?

I'd like to make an analog SPDT switch along the same lines as FSA2259UMX or similar chips, but out of simple discrete components. This is partly for learning, and partly because I'm redesigning a ...
0
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1answer
217 views

Normally Closed Negative Output, Positive Input Relay

I'm attempting to wire up my remote start in my manual transmission vehicle to ONLY start when the vehicle is in neutral. The way that the transmission works is like this: When in neutral, resistance ...
1
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2answers
210 views

SPDT relay is not switching

I have a 8 channel, 10A SPDT relay, which I'm having problems getting to work. Here are its specifications. I've attached a few images below for reference. So, initially, I connected a 6V power ...
0
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2answers
148 views

Control dual color LED without microcontroller

I have a latching, SPDT switch with dual color LEDs (the first page of the datasheet), that can either be Red or Blue depending on the polarity of the voltage. I would like them to be one color when ...
0
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1answer
61 views

Trigger an analog SPDT switch ONLY with a long button press

I'm currently working on project where I need an analog SPDT switch to be only triggered by a long button press. Long story short I'm trying to make a module that would fit inside a Game Boy. This ...
0
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1answer
341 views

can SPDT relays replace SPST switch? Or does it depend on the particular implementation of the relay?

I am working on SKU consolidation and my concern right now is if I have a cheaper option of SPDT switch with all the ratings same as SPST switch which is currently used. Can I replace it? Or does it ...
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2answers
271 views

How to prevent spdt shoot through?

I am working on a simple solar system for heating water. The idea is to use sun power and if not enough, use the power grid at night. I have a solar panel and a MPTT boost converter which collects the ...
0
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1answer
313 views

How to read pinout of this SPDT relay G8N-1F

Introduction: The direction indicators of the car (Honda FR-V) are not working anymore. I managed to get the ICU (integrated control unit) out of the fuse box beneath the steering wheel. Hell of a ...
2
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1answer
94 views

Power pin used as power in and power out

This is my first post here... I hope I will do everything correctly. I need to use a pin as power in and power out, switching it when needed. In particular, I want to use a USB micro B (5 pin) and ...
0
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1answer
506 views

XOR light switch with two switches and a relay

I have just created a circuit which uses an SPDT relay to switch a light on or off whenever i double clap. It works fine with my desk lamp, so i thought it would be nice to add it to my wall mounted ...
0
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3answers
359 views

Converting a push on/push off SPDT switch into a toggle

I'm working on a small electronics project: trying to convert a guitar footswitch into a push-to-talk foot pedal. At my disposal, I've got a Teensy acting as the actual HID device (to be connected to ...
0
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3answers
1k views

How to/should I bypass switches?

I want to make a stage box (with light in it) so when the guitarist or singer steps on it, it lights up. In the box I want to use a 12W (or maybe later 2) LED lights (which have a normal EU power plug)...