Another of the many similar configurations we have in this section. This one is from a Radio Electronics magazine from June 1985. The transistor is according to the power of the controlled motor.
This circuit was originally designed to drive an engine with a small flower that dances when the...
In the figure we have an RF amplifier for tunnel diode. The frequency range will depend on the...
Using two common operationals, such as 741, this circuit serves as a medium control in an...