In the above circuit diagram, a CMOS operational amplifier (op-amp) controls the current via a P-Channel HEXFET power transistor (IRF9520) to maintain a constant voltage across R1. The current is…

This is the design diagram of 5 band graphic equaliser circuit build using operational amplifier chips, the NE5532 or LM833. The op-amp ICs is a good choice because of inexpensive…

…space inside to accommodate it. Fit a 1-amp in-line fuse as close as achievable to the power source. This is Extremely Crucial. The fuse is there to secure the wiring…

…the Fuzz Face…maybe to help brighten up those characteristically “dark” sounding British amps some. Using a Vox ToneBender with a Fender Twin, or any other Fender amp, would be nearly…

…a full bypass mod The IC is any low noise dual op-amp (operational amplifier), shown on the scheme is the 4558 (for example) Download Octave Fuzz Pedal circuit diagram in…

…handle up to 16 Amps, but PCB trace capacity would have to be beefed up with some hookup wire where DC motor current runs through the Printed Circuit Board. Requires…

…for the circuit it self. The circuit also easy to built, it need 9V DC supply to work. The operational amplifier (op-amp) is a quad type by using RC4136N IC…

…heatsink Ideal for e.g. op-amp applications, amplifiers, … Trimmers can be replaced by potmeters to allow continuous adjustment of output voltage LED output indicators Circuit Specifications: Positive and negative output…

…is basically a switching type circuit made with the help of a popular dual op-amp IC LM358N which is configured here as a comparator. (Note that only one half of…