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.
With this circuit, a well known configuration, small speakers and even low-impedance headphones...
In this circuit we show how it is possible to control a high power load (which depends on the...
We found this circuit in a publication from 1966. The components are from the period. Complete...