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.
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.
I have done the old wire trick... and that causes the LED to be on even when the battery is not low (it starts at around 27 volts). Once the other transistor switches off, the circuit only draws current via the LED so the voltage remains fairly steady on the batteries.
This circuit was given to me an the person who gave it claimed it worked...well it does sorta. The LED that comes on when the battery voltage is low is extremely dim. I need help figuring out how to make it brighter. Please help. The goal was to swith on the LED when the battery gets low and...
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