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.
We got this circuit from Radio Electronics from July 1990. The circuit mimics the sound of the red...
We found this basic circuit of a relaxation oscillator with unijunction transistor in a 1976...
We found in an old documentation how to use a 555 as a monostable key. The circuit should not be...