This circuit from a June 1957 Radio Electgronics is for oscilloscopes of the time with a maximum frequency of a few megahertz. The circuit is battery powered.
We present a DC-DC converter circuit that can operate with input voltages from 2.4 V to 14 V and...
This excellent 3-transistors audio preamplifier is suitable for use with low impedance...
This TTL circuit was found in a 1978 technical documentation. The power must be supplied with 5 V....