The integrated circuit used in this amplifier is not very common today. This amplifier was found in the 1977 National Semiconductor Audio Handbook. The power source must be at least 500 mA.
We found this circuit in the April 1975 Radio Electronics magazine. The circuit has a latch and...
We found this sophisticated home alarm in a 1994 documentation. The circuit supports sensors of...
This circuit was found in the 1991 Electronics Experimenter's Handbook. It activates a relay when...