This circuit mimics the trill of a bird. We found it in an American documentation from the 90s. It is based on the LM3909 integrated circuits.
The circuit shown in figure 1 serves to control a servo motor with a current of up to 200 mA. The...
This is a circuit with a period component that consisted of a voltage reference. The circuit is...
This amplifier, suggested by National Semiconductor (Now Texas Instruments), has high input...