This circuit is from 1999 documentation. The integrated circuit used is not very common today. Both transistors are used if the motor current is greater than 500 mA.
This oscillator produces a signal with a central frequency in 1 MHz. This frequency can be...
This circuit was found in an Electronics Now of the 80s applying to NiCad batteries of the time....
This configuration, which does not have a very high Q, uses a 741 operational amplifier, but other...