This circuit was found in old documentation, but the setting applies to any operational. Resistors and capacitors determine the frequency. For the indicated values the frequency is 10 kHz.
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single-step motor...
This variable power supply uses common components and can supply a current up to 1 A. The...
A square signal of about 1 kHz is produced by this astable multivibrator. Frequency is determined...