This equalizer has automatic level control, being designed by Sanyo for cassette recorders and radio. The maximum supply voltage of the LA3210 is 15 V and the typical idle current of 1.4mA.
This simple binary counter triggers two LEDs according to the number of pulses applied to the...
We found this circuit in a November 1970 Radio Electronics. It uses a PUT or programmable...
Found in a 1968 Novel Electronics Circuit, this circuit compares two light intensities using...