This circuit uses an amplifier from National Semiconductor, uncommon nowadays. The numbers in parentheses are for the second channel. The circuit is suitable for old tape recorders.
This circuit was found in a 1964 Electronic Design. The circuit delays the firing of a load for a...
XTAL from 4 to 20 MHz can be used in this oscillator. The XRF choke can range from 10 to 100 µH...
This 5 W power circuit with just two transistors was published in Radio Electronics magazine in...