This small 1 W amplifier uses a Motorola integrated circuit from the 1970s. The integrated circuit used is uncommon today and the power supply does not have to be symmetrical.
This conventional astable uses two NPN transistor and was found in a publication of the year 1968. The...
This circuit is from Motorola technical documentation from the 70s, but it can be easily assembled...
Found in documentation from ON Semiconductor, this circuit provides a rectangular output signal with...