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 appears in other articles in this section, but it is very interesting. It is a...
This Linear Technology circuit can measure currents from 100 pA to 100 uA. The circuit is from the...
This circuit for an isolated instrument or multimeter can increase the sensitivity of your...