This circuit can be used as an answering password system in a store, office, or other location. The circuit is from Intersil using components of the time. The circuit is from the 80's.
This circuit uses a JFET at the input to increase the impedance. The circuit has a gain voltage...
Other amplifiers of the series like the MC3301, MC3401 and LM2900 can be used in this circuit. We found...
This analog tachometer can be used in cars with platinum or in robotic and automation applications to...