Amplifier with 4007 (CB24992E)

The 4007 integrated circuit consists of 4 MOSFETs that can be used separately. The figure shows how to use these transistors in linear amplifiers.

TIP31 and TIP32 1W Amplifier (CB25709E)
This small audio amplifier was found in the May 1994 issue of Electronics Now magazine. The power...
Audio Relay (CB13614E)
The displayed relay operates with an audio signal applied to the input. The transistors can be...
Photodiode Amplifier 1 (CB13092E)
The circuit shown in the figure and uses the diode in the leakage current operation mode. In it,...