Symmetrical opamp supply circuit
No description available.
DC-Coupled Audio Amplifier Circuit
This design circuit for audio amplifiers with DC coupling to the load is not commonly used today, despite its clear advantages. One advantage is the elimination of the need for a second (symmetric) power supply, and another is the improved...
SIX RANGE LIGHT METER
The circuit involves the switching of feedback resistors for an operational amplifier (op-amp) that is driven by a Radio Shack 276-115 selenium solar cell, resulting in a multirange linear light meter. A 1000-megohm resistor is utilized for the highest sensitivity,...
Amplifier Compressor MC3340P
The output is rectified, and TR2 controls the gain of the ICL. This audio compressor circuit uses an MC3340P as a variable gain amplifier.
The audio compressor circuit described utilizes an MC3340P integrated circuit, which functions as a variable gain amplifier...
simple-amplifier-with-c945mje340-and.html
This simple amplifier delivers good sound quality with a power output of approximately 10 to 14 Watts and operates on a supply voltage of about 34 to 36 Volts DC. It requires a preamplifier due to its limited advanced features....
Hands-off-intercom
Amplifier A increases the microphone's output to a usable level. The output signal is fed to op amp B, which inverts the signal by 180 degrees. A balance-control potentiometer connects across the outputs of amplifiers A and B. If an...
Motorola Micor S-meter Driver
The artwork style of the operational amplifier and the meter face suggests that it is an ACC design from an old issue of ACC Notes. The second image was scanned, and the text below was written from scratch. If the...
Remote tracking circuit schematics
The circuit consists of two main components: (1) a power supply circuit featuring a transformer (T) that steps down AC 220V to 33V, followed by a full-wave rectifier, a filter, and a three-terminal regulator that outputs +24V. This circuit also...
Amplifier Circuit Output Relay Delay Audio
This is a simple circuit designed for an audio amplifier project to control the speaker output relay. The purpose of this circuit is to manage the relay that activates the speaker output in the audio amplifier. The circuit is designed...
PM4040F application circuit switching power supply drive
The PM4040F is utilized in switching power supply applications for medium power ranges. It is designed to drive power supplies between 200W and 800W, as illustrated in the accompanying bridge circuit. For power applications below 1000W, an alternative circuit configuration...