Found in a 1988s Radio Electronics, this circuit uses transistors of general use to increase the intensity of signals up to about 30 MHz. The power can be done by battery because the consumption is low.
The integrated circuit of this amplifier is not very common today. The output transistors can be...
This circuit produces a loud sound in the speaker when water level reaches the sensor. The power...
This circuit was found in a Linear Technology documentation from the 90's. The integrated circuits are...