This circuit was found in General Electric's 1965 documentation. It appears elsewhere on the site. The SCR and the diodes must be in accordance with the motor current.
This circuit was found in Philips documentation from 1965. No information was given about the...
This sophisticated decade of benchtop resistors was found in the November 1989 issue of Radio...
This configuration based on a conventional astable multivibrator was found in a 1982 publication. The...