The time of this timer depends on C1. The circuit was found in the July 1994 Electronics Now magazine. The supply voltage depends on the relay and can go up to 12 V.
This circuit is from 2001 documentation and consists of a small FM transmitter with two inputs, one...
This amplifier, of excellent quality, provides a power of 40 W IHF, or 22 W RMS, in a load of 8...
The input of this regulator can be between 7 and 12 V and the output is 5 V. The circuit is from...