This circuit is from 1980s documentation. The maximum operating frequency is 3.5 MHz. The current of the LED can be from 0 to 100 mA. The integrated circuits used are from that time.
The pulses applied to input C of the SAA1027 integrated circuit determine the engine speed. Each...
In the figure we have 3 monostable circuits for triggering without rebounds of CMOS circuits. The...
This integrated consists of a mono amplifier for battery powered recorders and radios. The load...