Using red LEDs with ignition voltages of the order of 1.5 V we can make a multiple voltage reference. Current is low.
With this circuit it is possible to activate a 12 V relay from a 6 V supply. The circuit operates as a...
This circuit is from a 1980s Motorola documentation. The circuit can be set to fire from 60 to 120...
This circuit is from a project published in the March 1996 Electronics Now magazine. The author used...