This low frequency divider uses unijunction transistors. The bipolar transistor can be a BC548 and the zener diode Z4XL can be a 12 V zener. The circuit was found in a 1967 publication.
We found this circuit with JFETs in a Radio Electronics magazine from June 1969. The circuit has...
This 1 kHz oscillator uses a Norton LM3900 operating system. The frequency depends on C1 and R1...
Found in a Motorola manual from the 1980s, this circuit uses components from the era. The circuit...