Diagram Guide

Tuesday, September 2, 2014

TDA8566 2x40 W 2 Ω stereo BTL car radio power ampliﬁer

Description of TDA8566:

The TDA8566 is an integrated class-B output ampliﬁer which is available in several packages. TDA8566TH is contained in a 20-lead small outline plastic package. The TDA8566TH1 is a 24-lead small outline plastic package which is pin compatible with the 2C-bus controlled ampliﬁer TDA1566TH for one board layout. TDA8566Q is a 17-pin DIL-bent-SIL package. The device contains 2 ampliﬁers in a Bridge-Tied Load (BTL) conﬁguration. The output power is 2 × 25 W in a 4 Ω load or 2 × 40 W in a 2 Ω load. It has a differential input stage and 2 diagnostic outputs. The device is primarily developed for car radio applications.

Features TDA8566:

Differential inputs
Very high Common Mode Rejection Ratio (CMRR)
High common mode input signal handling
Requires very few external components
High output power
4 Ω and 2 Ω load driving capability
Low offset voltage at output
Fixed gain
Diagnostic facility (distortion, short-circuit and temperature pre-warning)
Good ripple rejection
Mode select switch (operating, mute and standby)
Load dump protection
Short-circuit proof to ground, to VP and across the load
Low power dissipation in any short-circuit condition
Thermally protected
Reverse polarity safe
Protected against electrostatic discharge
No switch-on/switch-off plops
Low thermal resistance
TDA8566TH1 is pin compatible with TDA1566TH

Applications:

Home-sound sets
Multimedia systems
Car audio (boosters)

Circuit diagram TDA8566:

TDA8566 2 × 40 W/2 Ω stereo BTL car radio power ampliﬁer with differential inputs and diagnostic outputs

Datasheet for TDA8566: Download

Where you can buy: Aliexpress

Where you can buy: DealExtreme

2000 Impala Wiring Diagram

This is 2000 Impala Wiring Diagram: power distribution, junction block, green wire, lamps fuse, high beam, assembly, blue wire, high beam, headlamp assembly, dimmer, engine wiring harnes, junction block, lamp fuse, orange wire

HOW TO ADJUST Carburetor Engine Speed WACKER NEUSON GENERATOR GP 3800 GP GPS 5600 GP GPS 6600

CARBURETOR ADJUSTMENT

* Start the engine and allow it to warm up to operating temperature.

* Set the pilot screw (a) two turns out.

* With the engine idling, turn the pilot screw (a) in or out to the setting that produces the highest rpm.

* After the pilot screw is adjusted, turn the throttle stop screw (b) to obtain the standard idle speed.

Note: On some engines the pilot screw is fitted with a limiter cap (c) to prevent excessive enrichment of the air-fuel mixture in order to comply with emission regulations. The mixture is set at the factory and no adjustment should be necessary. Do not attempt to remove the limiter cap. The limiter cap cannot be removed without breaking the pilot screw.

Adjusting Engine Speed

Generators require a fixed engine speed to maintain the correct voltage. Engine speed is controlled by a governor which automatically adjusts to varying loads on the engine to maintain a constant speed. There is no throttle control.

To set the engine to the proper speed:

Turn the speed adjusting screw (b) in or out to obtain a no-load speed.

NOTICE: Setting the engine speed too high or too low may damage tools and other appliances attached to the generator.

Electrical Schematic - GP 2600

Electrical Schematic - GP 3800, GP/GPS 5600, GP/GPS 6600 CAN Models

Components - GP 3800, GP/GPS 5600, GP/GPS 6600 CAN models

CLICK ON THE PICTURES TO ZOOM IN

PC Heat Monitor

The PC processor generates very high temperature during its operation which is dissipated by the large heat sink placed above the processor. If the heat sink assembly is not tight with the processor or the cooling fan is not working, PC enters into the Thermal shutdown mode and will not boot up. If the PC is not entering into thermal shutdown, the high temperature can destroy the processor. This simple schema can be placed inside the PC to monitor the temperature near the processor. It gives warning beeps when the temperature near the heat sink increases abnormally. This helps to shutdown the PC immediately before it enters into Thermal shutdown.

The schema uses a Piezo element (one used in Buzzer) as the heat sensor. The piezo crystals reorient when subjected to heat or mechanical stress and generates about one volt through the Direct piezoelectric property. IC1 is designed as a voltage sensor with both the inputs tied through the capacitor C1.The non inverting input is connected to the ground through R1 to keep the output low in the standby state. The inputs of IC1 are very sensitive and even a minute change in voltage level will change the output state.

In the standby mode, both the inputs of IC1 are balanced so that output remains low. When the Piezo element accepts heat, it generates a minute voltage which will upset the input balance and output swings high. This triggers LED and Buzzer. Capacitor C2 gives a short lag before the buzzer beeps to avoid false triggering. Warning beep continues till the piezo element cools.

Note: Enclose the schema inside the PC with the piezo element close to the heat sink of the processor. Adjust the distance between the piezo element and heat sink so as to keep the schema standby in the normal condition. The piezo element can sense a 10 degree rise in temperature from a distance of 5 cms. Power to the schema can be tapped from the 12 volt line of SMPS.

Source by : Streampowers

Monday, September 1, 2014

Photo Detector with TTL Output Wiring diagram Schematic

This is a photo detector, a detector with TTL output light that can be used in projects for Arduino. This schema offers low output level when there is enough light, or a light that triggers the system. He can give a command, for example, turn on the lights when it gets dark and off when clear. The output is compatible with TTL level and gives low (LO) when Q1 phototransistor detects light. RV1 with a trimpot, we can adjust the sensitivity.

Photo Detector with TTL Output Circuit Diagram

Parts List
R1 = 270 Ohm
R2-5 = 1K ohm
R3 = 10K ohm
R4 = 100 ohm
RV1 = 10K ohm
Q1 = BP103 Siemens Phototransistor
IC1 CA3130
C1-2 = 100V 100nF ceramic
IC2 = 74HCT13
D1 = 1N4148-2

Muscular Bio Stimulator for Treatment of Cellulite Wiring diagram Schematic

This is a very simple schema of a bio-stimulator Muscular, which has indications for the treatment of cellulite. He sends little shocks through two electrodes, and should take great care when using the stimulator. The muscle stimulator schema is based on a 555 timer IC. The transformer must be 220 volts to 12 100 to 150 mA and the schema is connected in reverse.

Muscular Bio-Stimulator for Treatment of Cellulite Circuit Diagram

The IC 555 to generate pulses at 80 Hz and 150usec by the output voltage of the muscle stimulator device is about 60 volts to 150 volts, but the output current is very small and there is no danger of electric shock.

The potentiometer P1 bio-stimulator sets the amplitude of the output pulses and must be operated by the "patient", starting with the knob fully counterclockwise, then rotating it slowly clockwise until the LED begins to light up.

The functional principles of the bio-stimulator is the same commercial bio-stimulator.

Parts List:

Linear Potentiometer P1 4K7
R1 180K 1/4W Resistor
R2 1K8 1/4W Resistor
R3 2K2 1/4W Resistor
R4 100R 1/4W Resistor
C1 100nF 63V Polyester Capacitor
C2 100uF 25V electrolytic capacitor
D1 Red LED 5mm.
D2 1N4007 1000V 1A Diode
Q1, Q2 BC327 45V 800mA PNP Transistors
IC1 CMOS 555 timer IC
T1 220V Primary, 12V Secondary 1.2VA current transformer
B1 3V (two 1.5V AA or AAA)

Muscular Bio-Stimulator for Treatment of Cellulite Circuit Diagram

Build a 1 2 36V 5A Adjustable Power Supply with LM317

Build a 1.2-36V 5A Adjustable Power Supply schema diagram with LM317. This schema is a simple power supply schema. 1.2 - 36V adjustable bench power supply with 5A of output current. Max input voltage is 37V and output is adjustable via potentiometer between 1.2 up to 36 volts. TIP147 PNP darlington transistor boosts the current of LM317 from 100mA to 5A. LM317 is the most useful and inexpensive adjustable regulator and for this schema you can also use LM317 L that can give 100mA, thats enough for transistor bias.

1.2-36V 5A Adjustable Power Supply Circuit Diagram

D1 and D2 are protection diodes because when you turn the schema off the output capacitors are discharging and can damage the transistor or regulator. 100nf capacitors are in parallel with electrolytic capacitors to remove high frequency noise because large value electrolytic have large ESR and ESL and cant remove high frequency noise.