Upon pressing the switch, the circuit generates a pulse whose duration depends on C. The transistors can be BC548 and the power can be between 1 and 6 V. The circuit is from a 1975 publication.
This excellent amplifier with complementary symmetry output stage was taken from one of my audio...
May 2017 - Toshiba's new Bluetooth Low Energy Chip TC35678 for wireless applications can be...
Today we can call this circuit a baby monitor. It is a microphone amplifier found in a publication by...