AmplifierCircuits

The idea to make a guitar with a built-in speaker came when I stumbled upon a fact that if I miss a pulse through the speaker, it will be heard far away. Recall manual siren. Human hand, twisting it develops 0.1 horsepower, this is where it is 100 watts (RMS), and heard it on the entire city.Flashlight compared with 1500 Watt PMPO 1000W RMS projector brightness turned this flashlight shines brighter and more, even though there was a light bulb 5 watts RMS. Similarly, energy saving light bulbs, written on them two 100 watts and 8 watts. But this retreat. Also on imported musical instrument in writing all power PMPO. So, if the distortion of the sound spectrum converted to a pulse with a large buildup of small capacitors and alleviate sinus large capacitors, then turn out so when mixed. Promoduliruyutsya under sinusoidal pulses, acquiring the height of its envelope. Pulses will hear anything away, because of their large growth. But due to the fact that they will have different ...

Pedal ("lotion», stomp-box) is designed to simulate the sound of a tube amp channels slaboperegruzhennogo Fender Twin Reverb and implementation effects «Clean» and «Crunch». A distinctive feature of this pedal is very plausible imitation tube sound, and low power consumption of the battery. («Clean» - sound with virtually no distortion, but with the corrected tone, usually bright, with a predominance of high frequencies. «Crunch» - sound on the verge of distortion and with a little overdrive). The article is intended not only for professionals, musicians, but also for beginners because some terms and concepts considered overly detailed, pro please treat this with understanding ... A little history In contemporary music, electric guitar takes about the same place as in the classical violin. Some styles of rock without electric possible at all ... For all that is in itself an electric guitar - an instrument with a rather weak capacity (to see this - turn it directly into...

Description Ql is connected as an emitter follower in order to present a high input impedance to the guitar. C2, being a relatively low capacitance, cuts out most of the bass, and C3 with RV1 acts as a simple tone control to cut the treble, and hence the amount of treble boost can be altered.Q2 is a simple preamp to recover signal losses in C2, C3, and RV1. Circuit Diagram Guitar treble boost   

Description This is a circuit I have designed for guitar effect builders, I was very unsatisfied with the way everyone was using just a plain old double pole double throw click switch for the bypassing. Most of the time it was very scratchy sounding using that method and I experienced loud pops in my amplifier when switching from straight through to effect. Observing my "Boss" pedals and how they were switched on and off I figured there must be more to it. It took me only about 4 hours to design and test this circuit, It works very well and I'm really satisfied with it so I'll be using it in all the effect pedals I build. It's a very clean bypass both electronically and mechanically. How it works: the first stage in the schematic is a 4011 nand gate chip set up as a debounced switch to give the logic pulses from the switch to the flip flop. The second stage is the flip flop, this is a 4027 JK flip flop set up in toggle mode, this controls the switching of th...

Circuit Description The IRF820  MOSFET has a  voltage rating of  500v, it should  work well in  preamp stages of  most tube amps. The 100 ohm  resistor is there  to suppress H.F.  oscillations. If  IRF820 is  physically close  to the 12AX7  plate, you  probably won't  need it. You can see how the MOSFET is equivalent to a triode: Source/Cathode; Gate/Grid; Drain/Plate You cannot use the MOSFET as a direct replacement for a typical tube gain stage. The MOSFET will not "self bias" like a typical cathode-biased tube stage.The MOSFET is an "enhancement device" while a triode is a "depletion" device. In this circuit, it is not necessary to use a heatsink on the IRF820. You can if you want. High voltage solid state guitar amplifier High voltage solid state pream stage guitar amplifier High voltage solid state reverb driver guitar amplifier

Description 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. 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 often fo...

Guitar Circuit description:      This small amplifier was intended to be used in conjunction with an electric guitar to do some low power monitoring, mainly for practice, either via an incorporated small loudspeaker or headphones. The complete circuit, loudspeaker, batteries, input and output jacks can be encased in a small box having the dimensions of a packet of cigarettes, or it could be fitted also into a real packet of cigarettes like some ready-made units available on the market. This design can be used in three different ways: Loudspeaker amplifier: when powered by a 9V alkaline battery it can deliver about 1.5W peak output power to the incorporated loudspeaker.  Headphone amplifier or low power loudspeaker amplifier: when powered by a 3V battery (2x1.5V cells) it can drive any headphone set type at a satisfactory output power level or deliver to the incorporated loudspeaker about 60mW of output power. This configuration is useful for saving battery costs....

Guitar Amplifier description: Guitar Amplifier parts list: R1______________18K 1/4W Resistor R2_______________3K9 1/4W Resistor R3,R6____________1K 1/4W Resistors R4_______________2K2 1/4W Resistor R5______________15K 1/4W Resistor R7______________22K 1/4W Resistor R8_____________330R 1/4W Resistor R9,R10__________10R 1/4W Resistors R11,R12_________47R 1/4W Resistors R13_____________10R 1W Resistor C1_______________1µF 63V Polyester Capacitor C2_____________470pF 63V Polystyrene or Ceramic Capacitor C3______________47µF 25V Electrolytic Capacitor C4______________15pF 63V Polystyrene or Ceramic Capacitor C5_____________220nF 100V Polyester Capacitor C6_____________100nF 63V Polyester Capacitor  D1,D2,D3,D4___1N4148 75V 150mA Diodes  Q1,Q2________BC560C 45V 100mA Low noise High gain PNP Transistors Q3,Q4________BC556 65V 100mA PNP Transistors Q5___________BC546 65V 100mA NPN Transistor Q6___________BD139 ...