Guitar Reverb Effect

Posted on Apr 4, 2012

The guitar input stage is a class A amplifier with adjustable bias. A 2N3906 PNP tranistor is used for a low noise design on this stage. The output of the preamp stage is sent to three places: the output mixer amp, the reverb driver amp, and the input clipping detector. The reverb driver amp consists of a phase inverting push-pull circuit made from dual sections of a 5532 high quality audio op-amp. This provides a voltage swing of approximate twice the supply voltage to the reverb impedance matching transformer, allowing higher power transfer. The 100 ohm resistor is critical for insuring a clean drive signal, without it, the op-amps can saturate when driving the transformer, producing unwanted distortion.

Guitar Reverb Effect
Click here to download the full size of the above Circuit.

The transformer matches the impedance of the driver amplifer to the reverb driver coil and allows a dual phase driving signal to power a reverb coil with one grounded side. The transformer is a standard "70 volt" audio line transformer that is o

Leave Comment

characters left:

New Circuits



Popular Circuits

6.9 GigaHertz Chrono PC-based
Adjustable 3 Ampere Regulator
Shaft type part temperature measurement system become by 51 one piece organizations
simplest smf automotive battery charger
3 Band graphic equalizer circuit
Momentary Switch Teamed With Latching Relay
Migrating from x86 to PowerPC vehicle control module
Taming the GTX 900 MHz