Tag Archives: switch

How to Read a Schematic

How to read a schematic, follow electronics circuit drawings to make actual circuits from them. This starts with the schematic for a very simple circuit with just some batteries, resistor, switch and an LED. Then it talks about Earth ground and chassis ground. Finally it moves on to a crystal radio amplifier schematic and adds […]

Simple Automotive 12V Delayed ON Relay Circuit ~ Interior Lights

Some people for privacy reasons do not like to open their car door at night and have their interior lights come on UNLESS they need them to. This circuit is designed to allow the interior lights to come on only if you allow them to by holding the door open longer than you usually would […]