This small voltage regulator was found in a 1969 EEE. More powerful transistors can be used to obtain a higher output current.
This oscillator does not carry any resonant circuit, except for the one formed by the crystal...
Found in US documentation, this circuit changes the waveform and phase of a sine signal. The...
This circuit is from a 1978 Texas Instruments optoelectronics manual. The trimpot adjusts the LED...