This amplifier uses an integrated circuit from the 70s, which is no longer common on the market. The circuit was used at the time as a sound output stage for televisions.
This high-gain digital amplifier uses general-purpose transistors. The supply voltage is logic...
We found this circuit in the March 1993 issue of Electronis Now magazine. The circuit uses common...
Using an LDR as a sensor and an operational amplifier this circuit was found in the Encyclopedia of...