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transistors latching circuit problem

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transistors latching circuit problem

Postby The Night Whisper » Wed Apr 06, 2016 11:25 pm

translatch.png
Transistors latching cct
translatch.png (18.51 KiB) Viewed 15333 times
Hi all
I've made a latching switch using a transistors but it's not working as it supposed, and i don't know why
When pressing the push button the led is lit but it's not latched since it turns off when depressing the switch
pls help why it's not latching the output voltage?
The Night Whisper
 
Posts: 1
Joined: Wed Apr 06, 2016 11:09 pm

Re: transistors latching circuit problem

Postby pebe » Fri Apr 08, 2016 3:46 am

There is nothing wrong with the circuit, it should work OK.

Check your wiring and connections. If all seems OK then you could have a faulty transistor. With the button pressed in, check that there is almost zero voltage between the emitter and collector of each transistor.

Will you let us know the outcome?
pebe
 
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Joined: Tue Dec 09, 2003 11:12 pm
Location: Ellon, Scotland

Re: transistors latching circuit problem

Postby PradeepKumar » Fri Aug 26, 2016 6:38 am

The circuit seems to be fine. All you need to look for is your connections.
PradeepKumar
 
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