This is a 1960s amplifier setup found in a period publication. The circuit uses a special driver transformer that inverts the phases of the signal to excite the output transistors.
This circuit produces the sound of percussion such as blocks, drum, bell, etc. The frequency...
This 4-transistor voltmeter was found in old European documentation but uses common...
The 4098 IC contains two monostable multivibrators in the same package. The basic configuration...