If you built the alarm warbler circuit described in Project 13, you might be looking for an effective means of triggering the alarm for ... An ordinary thyristor is used to activate a dc relay. ... The resistor biases the gate at such a low voltage that no current is permitted to flow . ... You can calculate the current by using Ohma#39;s law: current drain in amperes is equal to voltage TO + 12V ^ (CAR BATTERY) TOanbsp;...
|Title||:||Miniature projects for electronic hobbyists|
|Author||:||Ken W. Sessions|