This circuit was found in Motorola documentation from the 80's. The MOSFET admits equivalent according to the current and voltage of the motor that must be controlled.
This amplifier is from a commercial product from the 1970s. The circuit uses germanium transistors and...
This circuit was found in an old Radio Electronics, but can still be assembled as the components are...
Found in a 90s Radio Electronics, this circuit generates a signal of approximately 150 Hz,...