Wiring Schematic diagram: volt

Showing posts with label volt. Show all posts

Wednesday, November 19, 2014

6 12 Volt audio amplifier

The above is an amplifier circuit using supply voltages from 6 volts DC to 12 Volt DC. Power output of the amplifier is quite low with only 1 Watt 8 ohm impedance. You can apply this to the audio signal amplifiers that require strengthening are not so large as in the pocket radio.

Part List :
R1 = 100K
R2 = 39R
R3 = 100R
C1 = 100nF
C2 = 100uF
C3 = 100uF
C4 = 100uF
C5 = 470uF
C6 = 100nF
C7 = 68pF
C8 = 1nF
C9 = 47uF
IC = SFC2790C

Friday, November 7, 2014

Simple Regulated 12 Volt Supply

This circuit above uses a 13 volt zener diode, D2 which provides the voltage regulation. Aprroximately 0.7 Volts are dropped across the transistors b-e junction, leaving a higher current 12.3 Volt output supply. This circuit can supply loads of up to 500 mA. This circuit is also known as an amplified zener circuit.

Saturday, October 18, 2014

6 to 12 Volt Converter

Below its a converter circuit voltage from 6 Volt to 12 Volt DC.

6 Volt to 12 Volt DC

Part List :
R1, R4 2 .2K 1/4W Resistor
R2, R3 4.7K 1/4W Resistor
R5 1K 1/4W Resistor
R6 1.5K 1/4W Resistor
R7 33K 1/4W Resistor
R8 10K 1/4W Resistor
C1,C2 0.1uF Ceramic Disc Capacitor
C3 470uF 25V Electrolytic Capcitor
D1 1N914 Diode
D2 1N4004 Diode
D3 12V 400mW Zener Diode
Q1, Q2, Q4 BC547 NPN Transistor
Q3 BD679 NPN Transistor
L1 See Notes
Notes
1. L1 is a custom inductor wound with about 80 turns of 0.5mm magnet wire around a toroidal core with a 40mm outside diameter.

2. Different values of D3 can be used to get different output voltages from about 0.6V to around 30V. Note that at higher voltages the circuit might not perform as well and may not produce as much current. You may also need to use a larger C3 for higher voltages and/or higher currents.

3. You can use a larger value for C3 to provide better filtering.

4. The circuit will require about 2A from the 6V supply to provide the full 800mA at 12V.

Wednesday, October 15, 2014

Marlec 12 24 Volt Inverters Explained

What is an Inverter and why would I want one?

An Inverter is a device that takes the power from your 12 Volt or 24 Volt DC battery and converts it to 230 Volt AC power to run your normal household appliances on. For instance you may want to run a T.V.and D.V.D. Player whilst at sea on your yacht.

How does an Inverter work?

An Inverter boosts your 12 Volt or 24 Volt DC power by “switching” it to create pulses of AC electricity. The "switching" is done by various electronic components such as mosfets. The frequency at which these operate the “switching” process determines how closely the electical current resembles mains AC.

What is the difference between a Pure Sinewave Inverter and a Modified Sinewave Inverter?

The end of the last answer is the key to this. A Pure Sinewave Inverter uses a greater frequency of “switching” along with filtering to achieve a very close approximation to mains AC electricity. The diagram shows what a pure sinewave should look like. Inverters achieve a similar shape in a series of small steps of on /off switches. Pure Sinewave Inverters achieve a greater match to this form than Modified Sinewave Inverters. Not surprisingly they are more expensive than Modified Sinewave Inverters. Link

Wednesday, September 10, 2014

12 VOLT TO 230 VOLT INVERTER USING TRANSISTOR

Description

Circuit showing a 12 volt to 230 volt inverter using transistor.Here we have used a transistor astable multivibrator for making square wave pulse.The frequency of the square wave signal is high

and the voltage is 9v.There for the primary output voltage is almost equal to 120 volt.Here need a 12 volt power supply.

Components Required

Resistor10 k,2W-2, 1k 2W-2
Capacitor
22 PF-2
Diode
IN 4007-2
Transistor
SL 100-2
Transformer
9-0-9,230 VOLT PRIMARY

Sourced by : Link

Wednesday, September 3, 2014

12 Volt to 32 Volt CT converter DC to DC

Kit that can change the normal 12v dc voltage from a car battery, battery bike 12V motor. With the current 7A. so this circuit is very suitable for power car amplifiers and sound systems that use simple 12V battery.

Kit converter is also equipped with inputs "SEND" to activate the circuit and also send this interchangeable inputs is connected to the Tape / cd / dvd player of your car. And input "send" is if the non-connected with an output of "send" player car you then connect it to +12 hrs on v from the battery / batteries The series is already in the test kit and has been functioning normally.

Tuesday, August 26, 2014

12 Volt Battery Guardian

Dont get caught with a flat battery; this easy-to-build schema can cut off the power to a 12V fridge or car stereo system if the battery voltages drops below critical level. Electric fridges in vans and 4WDs are a great idea but if you are not careful, they can severely discharge the battery and leave you stranded. Maybe the battery will end up with severe damage as well. The same problem applies if you have a big stereo system and you like to play it without the motor running.

Main features:

Cuts power to load (eg, fridge) when battery voltage drops below a preset level.
10A rating.
Low power drain.
Chirping sound during cut-out.
Flashing LED indication during cut-out.
Automatically reconnects power when battery recharged.

Operation on 12V is fine when the motor is running and battery charge is maintained but if the fridge is allowed to run for too long when the motor is stopped, it can flatten the battery in a relatively short time. This is where the Battery Guardian comes into play. It monitors the battery voltage and disconnects power to the fridge before the battery becomes too flat to allow the engine to be started again.

Parts layout:

PCB layout:

Circuit diagram:

Source: Silicon Chip 6 May 2002

12 Volt DC Power Suplly Adaptor

This series of images you can apply to make an adapter or power suplly with the output voltage (V DC output 12V). Power supply in the only protected by a capacitor as a safety if the power supply is connected to the load on the circuit.

So I recommend using 35V capacitor with a minimum specification. The security of power supply to power the more we can menggunakkan transistor TIP, but I have not discussed it. To the diode bridge can be compiled from the 4 then you solder the diode bridge rectifier into one or you can buy a bridge rectifier so that the comb-shaped (sideways) or the box. At least I would suggest using a diode bridge 1 Ampere, in a series of adapters, the bigger the better course of ampere diode current in the circuit. Diodes like toll roads, and current as a car passing by. The larger and the width of the existing highway, the faster the flow of runs and through the circuit.

For the circuit power supply 5 V, you can change the volt regulator on the type 7805 and 7905. This application applies equally in this series. For variations such as fuse or circuit switch on / off you can try it yourself.

Transformer 18 V + - 1 A minimum CT

Minimum of 35 V + Capacitor

Tuesday, August 19, 2014

6 to 12 Volt Power Supply Inverter

This inverter circuit can provide up to 800mA of 12V power from a 6V supply. For example, you could run 12V car accessories in a 6V (British?) car. The circuit is simple, about 75% efficient and quite useful. By changing just a few components, you can also modify it for different voltages.

source:LINK

Monday, August 18, 2014

15 Volt Stabilizer circuit

In this time I will share about the circuit voltage stablizer or stabilization using IC 7815 and 7915, with a minimum of 17.5V to 50V input. The output of this circuit will issue with the current 15V voltage in accordance with the input. Stabilizer is also equipped with reinforcement by transistor 2N3055 and MJ2955.

Saturday, August 9, 2014

Symmetric 15 Volt Power Supply

Electronic equipment now suppose most OP Amp using symmetric system power supplies. In a variety of construction electronics module, to connect the module to a power supply that has been filtered to eliminate noise. This design is ideal for this. Voltage regulator power supply is different can also be used to provide symmetric voltage (+ / -) 9 volt, or (+ / -) 12 volts, or (+ / -) 15 volt or (+ / -) 18 volts, can be adapted to another use of voltage regulators using IC 78XX, to 79XX voltage regulator for positive and minus voltage, note the source voltage applied to the input IC regulator should be adjusted.

Before installing AC power supply after a rectifier and filtering capacitor DIODE so remember not to put inverted pin IC LM 78XX feet. 78XX series usually provides a positive voltage and a negative voltage 79XX provide. IC legs sequences differ between 78 and 79.

Look at the picture guide below.
(Image 78XX and 79XX)

Symmetric + / - 15 Volt Power Supply

Note :
A. 78XX
1: Input
2: Com
3: Output

B. 79XX
2: Input
1: Com
3: Output

NOTE

For you beginners in the field of electronics please be careful in connecting the device to the electrical power supply. Use isolate on the primary transformer before connecting to the mains at home or your school. Please attention to teachers supervising students on the practice. Thank you.

Schematic Diagram

Symmetric + / - 15 Volt Power Supply

Note :
7815
1: Input
2: Com
3: Output

7915
2: Input
1: Com
3: Output

This schema is as basic as it gets. Incoming AC voltage is rectified by the diode, then filtered by capacitors and electrolytic capacitors and will be a DC voltage, the positive and negative voltage regulators. After a DC current, diode cathode (+) into a positive regulator for 7815 and 7915 for negative voltage.

To determine whether the two poles of polarity has been working well, my place in the scheme of LEDs and associated resistors between each output and 0 volts (ground) line. Capacitors are placed close to the input and output pins of the regulator to increase the stability of the response
Two additional diodes per regulator protects the regulator from short schemaing. To limit the maximum current is better to use a heat sink on the IC LM 78XX to reduce heat.

I use to practice this schema using standard PCB factory has been punching holes to plug in a few mill-meter leg component, we connect pin legs live components with copper wire (wire power cord). You must know the symbols in the electronic equipment for easy assembly.