• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Countdown Timer

Status
Not open for further replies.

AgusTeGe

New Member
Hello,
I am doing the same project as discussed here.
I have countdown timer with battery source 1.5V.
From your diagram, I change the relay with LED and use 5V DC power supply.

Experiment-1:
Circuit using DC power supply 5V and Timer using battery 1.5V, the circuit works.

Experiment-2:
Circuit using DC power supply 5V and Timer using same power supply (with stepdown module to get 1.5V), the circuit NOT working. The LED always ON (even the alarm goes off).

My question is: Can I use the same power supply to power both Timer and Your Circuit?

Thanks
 
Last edited by a moderator:
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top