LM3900 Rectangular Oscillator (CB25179E)

This 1 kHz oscillator uses a Norton LM3900 operating system. The frequency depends on C1 and R1 and can be changed.

Crystal switched oscillator (CB9632E)
This oscillator with crystal for overtone operation was found in an old American documentation. The coil...
Basic PLL (CB21757E)
In the figure we have a basic PLL circuit with the LM567 or equivalent. The circuit is from a 1977...
DC and Stepper Motor Controls with the A3906 (CB23592E)
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single...