Hughes suggests this circuit in a 1968 documentation. The circuit uses old transistors that can be replaced with equivalents. MOSFET is the critical component of the circuit.
We found this circuit in a 1980s publication on telephony. The circuit uses an integrated...
This configuration, from a 1976 National Semiconductor manual, shows how to implement a power...
This audio stage can be used in siren circuits, sound effects and others to excite a few watts...