This circuit was found in General Electric documentation from the 1980s. The circuit is intended to receive 50 kHz modulated optical signals. The components support modern equivalents.
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
This three-chanel remote control transmitter uses a unijunction transistor as low frequency...
The adjustment of the maximum load voltage is made in the trimpot. The circuit is from 1994...