UM3561 - Simple Sound Effects Generator Circuit

This is a very simple. The IC UM3561 produces four differen sound effects, the output at Pin 3 being amplified by the transistor 2N2222. A 64 ohm loudspeaker can be substituted in place of the 56 ohm resistor and 8 ohm loudspeaker.

Skema Rangkaian Sound Effects Generator

The 2 pole 4 way switch controls the sound effects. Position 1 (as drawn) being a Police siren, position 2 is a fire engine sound, 3 is an ambulance and position 4 is a machine gun effect.

Note:
The IC sound generator UM3561 is now available in a kt from Maplin Electronics. Click here for the link.

READMORE...

60 Watt Guitar Amplifier + Tone Control

Rangkaian Guitar Amplifier + Tone Control

The following is a circuit of amplifiers are equipped with the appropriate regulatory tone in use to strengthen the electric guitar, using a single-rail supply of about 60V and capacitor-coupling for the speaker . The advantages for a guitar amplifier are the very simple circuitry, even for comparatively high power outputs, and a certain built-in degree of loudspeaker protection, due to capacitor C8, preventing the voltage supply to be conveyed into loudspeakers in case of output transistors' failure.

Skema Rangkaian Guitar Amplifier + Tone Control

In all cases where Darlington transistors are used as the output devices it is essential that the sensing transistor (Q2) should be in as close thermal contact with the output transistors as possible. Therefore a TO126-case transistor type was chosen for easy bolting on the heatsink, very close to the output pair

R30 must be trimmed in order to measure about half the voltage supply across the positive lead of C7 and ground. A better setting can be done using an oscilloscope, in order to obtain a symmetrical clipping of the output wave form at maximum output power

Note:
To set quiescent current, tide ampare meter in series between supplay with this series, then do the following

• Set the volume control to the minimum and Trimmer R3 to its minimum resistance.
• Power-on the circuit and adjust R3 to read a current drawing of about 30 to 35mA.
• Wait about 15 minutes, watch if the current is varying and readjust if necessary.

List component

R1,R2______________68K 1/4W Resistors
R3________________680K 1/4W Resistor
R4________________220K 1/4W Resistor
R5_________________33K 1/4W Resistor
R6,R16______________2K2 1/4W Resistors
R7__________________5K6 1/4W Resistor
R8,R21____________330R 1/4W Resistors
R9_________________47K 1/4W Resistor
R10_______________470R 1/4W Resistor
R11_________________4K7 1/4W Resistor
R12,R20____________10K 1/4W Resistors
R13_______________100R 1/4W Resistor
R14,R15____________47R 1/4W Resistors
R17,R18,R19_______100K 1/4W Resistors
R22__________________6K8 1W Resistor
R23,R25_____________470R 1/4W Resistors
R24__________________2K 1/2W Trimmer Cermet
R26,R27_______________4K7 1/2W Resistors
R28________________220R 1/2W Resistor
R29__________________2K2 1/2W Resistor
R30_________________50K 1/2W Trimmer Cermet
R31________________68K 1/4W Resistor
R32,R33______________R47 4W Wirewound Resistors


C1,C4,C5,C6________10µF 63V Electrolytic Capacitors
C2_________________47µF 63V Electrolytic Capacitor
C3_________________47pF 63V Ceramic Capacitor
C7_________________15nF 63V Polyester Capacitor
C8_________________22nF 63V Polyester Capacitor
C9________________470nF 63V Polyester Capacitor
C10,C11,C12________10µF 63V Electrolytic Capacitors
C13_______________220µF 63V Electrolytic Capacitor
C14,C15,C17,C18________47µF 63V Electrolytic Capacitors
C16________________100µF 25V Electrolytic Capacitor
C19_________________33pF 63V Ceramic Capacitor
C20_______________1000µF 50V Electrolytic Capacitor

P1,P2______________10K   Potentiometers
P3_________________10K   Potentiometer

D1,D2____________BAT46   100V 150mA Schottky-barrier Diodes
D3_________________LED

Q1,Q3____________BC546    NPN Transistors
Q2_______________BC556    PNP Transistor
Q4,Q5____________BD139    80V 1.5A NPN Transistors
Q6_____________MJ11016   120V 30A NPN Darlington Transistor
Q7_____________MJ11015   120V 30A PNP Darlington Transistor

J1,J2___________6.3mm. Mono Jack sockets
SW1,SW2___________SPST Switches
SPKR______________speakers  8 or 4 Ohm with Minimum power 75W

READMORE...

Guitar Effect - Fat Cat Distortion Pedal

Rangkaian Guitar Effect - Fat Cat Distortion Pedal

circuit of Fat Cat Distortion pedal Distortion is good for blues, rock, pop and alternative. by using this circuit You can hear the fat tone, even at maximum overdrive.

The transistor 2SC1815/BC546 is configured as voltage follower, giving a high impedance for the input. The op-amp serve an adjustable gain amplifier, to boost the signal until it reach the forward bias voltage (about 0.7 volts) of 1N4148 diodes, where the signal is clipped.

Skema Rangkaian Fat Cat Distortion Pedal for guitar

The tone controller in use adding a high frequency attenuation when the resistance is set to higher values. Finally, 2SK188/BF245 field effect transistors (FET) is used to buffer the tone control circuit to give low output impedance. Without this buffer, the tone controller would also act like a volume control when the output is connected to a low impedance input.

Quick data IC OP-Amp 5534

The NE5534, NE5534A, SE5534, and SE5534A are monolithic high-performance operational amplifiers combining excellent dc and ac characteristics. Some of the features include very low noise, high output drive capability, high unitygain and maximum-output-swing bandwidths, low distortion, and high slew rate.

IC OP-Amp 5534 Pin

absolute maximum ratings

• Supply voltage, VCC+ . . . . . . . . . . . . . . . . . . . . . . . 22 V
• Supply voltage, VCC– . . . . . . . . . . . . . . . . . . . . . . . – 22 V
• Input voltage either input . . . . . . . . . . . . . . . . . . . VCC+
• Input current . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . ±10 mA
• Duration of output short circuit . . . . . . . . . . . . . . . unlimited
• Operating free-air temperature range . . . . . . . . . 0°C to 70°C
• Storage temperature range . . . . . . . . . . . . . . . . . . – 65°C to 150°C
• Case temperature for 60 seconds. . . .. . . . . . . . . . 260°C
• Lead temperature range 1,6 mm (1/16 inch) from case for 60 seconds: JG package . . . . .. 300°C
• Lead temperature range 1,6 mm (1/16 inch) from case for 10 seconds: D or P package . . . 260°C

READMORE...

Rangkaian Gitar Reverb Efek

Gitar Reverb Efek

This is the circuit of guitar reverb circuit, it is suitable for use as a front-end to a guitar amplifier. This circuit features clipping indicators on the preamp and reverb recovery stages, allowing for the optimal gain settings.
Specifications

Skema rangkain gitar reverb efek

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 side grounded. The transformer is a standard "70 volt" audio line transformer that is often found on PA systems. One reader reported having good results using a Mouser 42TU013 (1K to 8 ohm) transformer. If you can find a reverb tank with a high impedance coil driver, the transformer may be eliminated, the driver coil will require isolation from ground.

The output of the reverb tank is sent to the reverb recovery amp, it is also a 2N3906 class A low noise stage.

The mixer amplifier is a 2N3904 transistor biased for class A operation. It mixes the dry signal from the input preamplifer with the wet signal from the reverb recovery amp through two 10K resistors. The wet signal level is adjusted by a 10K Potentiometer.

The clipping detector stages receive inputs from the guitar preamp and the reverb recovery amp, they act in an identical manner. The 1458 op-amp is wired as a Comparator with a threshold that is near the high side of the allowable voltage swing on the associated 2N3906 preamp stage. If the transistor output exceeds this voltage, the 1458 output turns on, causing the 4011 one-shot pulse stretcher circuit to fire. The one-shot circuit activates the LED, and stays on long enough that even minor clipping on the amplifier causes visible blinking.

The power supply filter involves an RC filter between the DC input power and the bus VF1. VF1 drives the reverb driver, the output amp, and the clipping circuit. VF2 and VF3 are further filtered with their own RC filters, they provide isolated DC for powering the input preamp and reverb recovery amplifier stages.

Source

READMORE...

Rangkaian Efek Gitar Sederhana

Rangkaian Efek Gitar

For you who like to assemble their own or following electronic love is one of a series of simple Treble Booster

Treble Booster seldom used by guitarists, and if the only digunakanpun final choice, but there are also still likes the sound of guitar effects "Treble Booster" Screaming Bird Treble Booster was first introduced by the Electro-Harmonix was the era when 70 -- the company is producing guitar effects Screaming Bird Treble Booster. And in this current era of emerging many similar effects in treble booster which sell in the market, either a modified or an almost similar to the original sound.

Skema rangkaian efek gitar

Transistor 2n5133 is difficult to find in the market, these transistors are short data

Various
Si NPN Lo-Pwr BJT
V(BR)CEO (V)=18
V(BR)CBO (V)=20
I(C) Abs.(A) Collector Current=50m
Absolute Max. Power Diss. (W)=200m
I(CBO) Max. (A)=.05u
f(T) Min. (Hz) Transition Freq=40M
Package=TO-106
Military=N

if you are difficult to obtain these transistors use the following, may be an equivalent for this part but Please review the transistor datasheet for more details.
BC183
BC548
2N5172
KT315A
BC168
BC238
2N4967
BC209
2SC536

READMORE...

Rangkaian Pre-Amp Sepul Gitar

This is a pre-amp guitar circuit suitable for high impedance type electric guitar pickups. The circuit is based on a uA 741 op-amp (IC1). The IC1 is wired as a non-inverting amplifier. Resistor Variable R1 can be used as a volume controller. Resistor Variable R6 can be used as tone controller. The switch S1 is used to produce “brilliant” or “soft” tonal effects.

Skema rangkaian Pre-Amp sepul gitar

Description Op-Amp UA741

The UA741 is a high performance monolithic operational amplifier constructed on a single silicon chip. It is intented for a wide range of analog applications.

* Summing amplifier
* Voltage follower
* Integrator
* Active filter
* Function generator

The high gain and wide range of operating voltages provide superior performances in integrator, summing amplifier and general feedback applications. The internal compensation network (6dB/ octave) insures stability in closed loop circuits.

Data max Ic UA741

* Symbol Parameter UA741M UA741I UA741C Unit
* Supply voltage (VCC) ±22 V
* Differential Input Voltage (Vid ) ±30 V
* Input Voltage (Vi ) ±15 V
* Power Dissipation (Ptot) 500 mW
* Storage Temperature Range (Tstg) -65 to +150 °C.

READMORE...