This electronic Morse Key for telegraph message transmission was found in an American 1980s amateur radio documentation. The circuit uses TTL technology and must be powered by a 5V voltage.
This amplifier for recording heads was found in a Radio Electronics from September 1963. The...
A negative floating regulator capable of supplying an output voltage of -100 V with regulation of 20 mV for...
This circuit allows controlling a LASER pointer with an input logic signal. R has 10 ohm for 3 V...