This circuit indicates when a 28 V lamp burns, lighting a neon lamp with higher voltage. The circuit is from 1969 documentation.
This small earphone amplifier with germanium transistors was obtained in a Japanese publication from...
This powerful regulator, shown in the figure is for 5V (TTL) is suggested by Motorola and makes use...
We found this circuit in an English publication in 1991. The circuit can be assembled with...