This small regulated power supply was found in a 1963 General Electric documentation. The special zener diode transistor can be replaced with an equivalent discrete configuration.
This circuit was obtained in an English magazine from 1978. We can easily assemble it because all...
This 6-transistor transistor radio was manufactured in Japan in the 1960s. It is a portable...
This conventional application of the 555 as monostable was found in a technical documentation from...