This circuit uses opposing MOSFETs operating on a 6 to 15 V input voltage. The circuit is from 1997 Linear Technology Applications and uses common components at the time.
Today we can call this circuit a baby monitor. It is a microphone amplifier found in a publication by...
Found in Motorola documentation from the 90's, this circuit charges the capacitor with a constant...
This small transmitter can send its signals to a receiver placed at distances up to 100 m. The...