Found in 90s Radio Electronics, this small transmitter has a good range. L1 is formed by 3 + 3 turns of wire 24 around a pencil as a reference.
Suggested by Motorola documentation from the 1980s, this circuit can be implemented with...
Found in a 1965 Electronic Design the purpose of this circuit is to control the gain of a stage by...
The operational amplifier used is a double 741. The power supply is symmetrical, and the gain is...