Showing posts with label dc. Show all posts
Showing posts with label dc. Show all posts
Sunday, November 2, 2014
5V DC REGULATED PHONE CHARGER ELECTRONIC DIAGRAM
5V DC REGULATED PHONE CHARGER ELECTRONIC DIAGRAM
Regulated phone charger which is used as an emergency charger for mobile phones with source from ordinary batteries, and works with 1.5V input DC voltage. At 5V, it can provide output to 70mA. If the current is drawn, the voltage will be drop. A006 microcontroller is used to create square wave which used to drive the Field Effect Transistor BBV93.
Thursday, October 23, 2014
12V Step Down Dc Converter Using ADP2300 ADP2301
Using ADP2300 ADP2301 step-down dc dc regulators with integrated power MOSFET, can be designed a very simple DC DC voltage converter. Output voltage delivered by these circuits can be adjusted from 0.8 volts, up to 0.85xVin , with ±2% accuracy. The maximum output current that can be provided by ADP2300 ADP2301 regulators is up to 1.2 A load current.
12V Step-Down Dc Converter Circuit Diagram
There are two frequency options: the ADP2300 runs at 700 kHz, and the ADP2301 runs at 1.4 MHz. These options allow users to make decisions based on the trade-off between efficiency and total solution size. Current-mode control provides fast and stable line and load transient performance. Bellow you an see two design examples, which require few common electronic components.First circuit will provide a 2.5V output at a maximum current of 1.2A from an input voltage of 12 volts. Second circuit will provide a 5V output at a maximum current of 1.2A from an input voltage of 12 volts.
6 to 15 Volt DC Converter
A very efficient 6V to 15V DC to DC converter using LM2585 is publicized at this time. LM2585 is a monolithic integrated voltage converter IC with the intention of can be situated used stylish various applications like flyback converters, boost converters, advance converters, multiple output converters and the rest. The circuit requires lowest possible amount of outdoor components and the IC can source up to 3A output current.
at this juncture the IC is wired for instance a boost converter somewhere resistors R1 and R2 are used to established the output voltage .The junction of R1 and R2 is connected to the comment pin of IC1. Capacitor C4 is the input filter while capacitor C1 the filter on behalf of output. set of contacts comprising of resistor R1 and capacitor C2 is intended for frequency compensation. Inductor L1 provisions the energy for acquiring boost conversion.
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| 6 to 15 Volt DC Converter |
Monday, October 20, 2014
Build a 12V To 24V DC DC Converter Circuit Diagram
Build a 12V To 24V DC-DC Converter Circuit Diagram.This simple 12V To 24V DC-DC Converter Circuit Diagram can provide up to 24V from a 12V source. It can be used to run radios, small lights, relays, horns and other 24V accessories from a 12V vehicle with a maximum draw of about 800mA.
It can be used to charge one 12V battery from another, or step up the voltage just enough to provide necessary overhead for a 12V linear regulator. Using one op-amp as a square wave oscillator to ring an inductor and another op-amp in a feedback loop, it wont drift around under varying loads, providing a stable 24V source for many applications. With a wide adjustment in output this circuit has many uses.
12V To 24V DC-DC Converter Circuit Diagram
Parts
| R1, R2, R3, R4, R8, R7 | 6 | 100K 1/4W Resistor | |
| R5 | 1 | 470 Ohm 1/2W Resistor | |
| R6 | 1 | 10K Linear Pot | |
| C1 | 1 | 0.01uF Mylar Capacitor | |
| C2 | 1 | 0.1uF Ceramic Disc Capacitor | |
| C3 | 1 | 470uF 63V Electrolytic Capacitor | |
| D1 | 1 | 1N4004 Rectifier Diode | |
| D2 | 1 | BY229-400 Fast Recovery Diode | See Notes |
| Q1 | 1 | BC337 NPN Power Transistor | |
| U1 | 1 | LM358 Dual Op Amp IC | |
| L1 | 1 | See Notes | |
| MISC | 1 | Board, Wire, Socket For U1, Case, Knob For R6, Heatsink for Q1 |
Notes
- R6 sets the output voltage. This can be calculated by Vout = 12 x (R8/(R8+R7)) x (R6B/R6A).
- L1 is made by winding 60 turns of 0.63MM magnet wire on a toroidial core measuring 15MM (OD) by 8MM (ID) by 6MM (H).
- D2 can be any fast recovery diode rated at greater then 100V at 5A. It is very important that the diode be fast recovery and not a standard rectifier.
- Q1 will need a heatsink.
Sourced By Circuitsstream
Simle DC to AC Inverter by IC 555
This be basic AC inverter Circuit. Convenient for the initiator who have to is extremely fond of something experience. Because of use IC 555 highly popular, perform produce the frequency ,then enlarge with transistor NPN and PNP number TIP41 and TIP42 drive the coil transformer. Get by can pay Voltage output about 120V to 230V at frequency 50Hz. By have R4 perform control the frequency and should use. Voltage supply about 5V to 15V the detail sees in circuit picture sir. Link
Sunday, October 5, 2014
2N3055 DC 12V to DC 6V 7 5V 9V Converter
This circuit is DC to DC converter model step down voltage. That can modify voltage input 12V DC from be DC 6V , 7.5V and 9V by have the size current about 1A – 2 Amp think. Be easy circuit use Zener diode maintain one’s position voltage. Be stable and have transistor 2N3055.
Friday, October 3, 2014
Electronic DC fuse circuit diagram
This DC electronic fuse need not be replaced. It can repair just press one of the S1 button start / restart. Once you press S1, the thyristor T1 triggers and current flows to the load of consumers through T1 and RS resistance. Even after releasing the start button, the current continues to flow as long as the current value does not sink below a certain level.
The current flowing through the thyristor T1 will sink below the level of exploitation, when the current is diverted through the 2N3055 transistor T2. T2 and RS are built into the electronic circuit fuse for this purpose. If the voltage drop exceeds RS over the activation voltage base-emitter diode of T2, the transistor thus avoiding the thyristor. The value of the resistance of the RS must be at least 0.2 W. This should be sized to the product of the RS, multiplied by the value of the maximum current is equal to 0.7 volts.
After passing through the T1 T2, the current flowing through the thyristor sinks below the portfolio and the T1 is turned off. This in turn causes the voltage drop across the resistor RS to sink below the activation voltage base-emitter and the transistor T2 is turned off. The end result is the closure of the entire circuit. The DC fuse can be reactivated by pressing the start / restart.
The value of the resistor R1 is dependent on the supply voltage. Multiply the supply voltage of 1 KW to get the value of R1. Connect the DC circuit electronic fuse PLUS line of customer load. The drop in the circuit coltage is less than 1 volt.
Saturday, September 20, 2014
TL594 12V DC Switch Mode Power Supply Wiring diagram Schematic
In recent years, the use of switch mode power supply (SMPS) has become more comon as more applications demand for greater power eficiency. It makes use of semiconductor (mostly MOSFET) fast switches to switch DC input that has been rectified at high frequency. The advantages of high frequency switching are that it reduces the size of inductor, capacitors & transformer used. Other advantages of switching power supply over linear power supply are :
1) High Efficiency (up to 90% and above for nice design).
2) Output can be higher than input.
3) Able to operate over a variety of input power supply.
4) Able to have over output.
3) Able to operate over a variety of input power supply.
4) Able to have over output.
The setback of using SMPS compared to linear power supply is that it generates electrical noise which contributes to electromagnetic compatibility design issues & more part count.
Buck Converter SMPS
The SMPS schema below from Power Integration makes use of LNK304 as its high frequency switch. Take note that this schema is non isolated type which means that the output is not electrically isolated from the input & all testing ought to be completed using an isolation transformer to provide the AC line input to the board.
Make positive that you have electrical safety knowledge & experience before you embark on doing this project.
12V DC Switch Mode Power Supply Circuit Diagram
Thursday, September 18, 2014
Universal DC Power Supply
I didnt realize till the other day that I have never shown a circuit for a standard power supply. Shown below is a supply that will use any of the LM78XX series of voltage regulators. The transformer in the circuit will vary depending on which regulator you use. For voltages from 5 to 12 use a transformer with output of 18vac. With voltages from 15 to 24 use a transformer of 30vac. The first capacitor in the circuit may need to vary if you are supplying more current to the load. Typically it will be 2000uf for every amp of current.
Wednesday, September 10, 2014
4 5V To 12V DC
This ic 4.5V to 12V boost schema.You all can get lots of advantages through this schema.Here I have used famous IC LM2698.
Note
# input supply voltage range is 2.2V to 17V DC and outputs ranging from 2.2V to 17V DC
# IC can deliver only up to 400mA.So dont connect lodes more than that
# Build this schema on a PCB
Friday, August 29, 2014
555 DC to AC inverter circuit diagram
This is inverter schema diagram.Here I have used famous Transistors TIP41 and TIP42.And the frequency is generated by NE555.By using R4 you can control the frequency.out put voltage is 120V-230V.the frequency is 50Hz.This schema operates with 5V-15V.
Note
# Be careful because you are dealing with 230V.
#This schema is not suitable for kids.
#Use heat sinks for transistors
Thursday, August 28, 2014
Simple Dc Static Switch Wiring diagram Schematic
This is a Simple Dc Static Switch Circuit Diagram. This schema is a static SCR switch for use in a dc schema. When a low power signal is applied to the gate of SCR1, this SCR is triggered and voltage is applied to the load. The right hand plate of C charges positively with respect to the left hand plate through Rl.
Simple Dc Static Switch Circuit Diagram
When SCR2 is triggered on, capacitor C is connected across SCR1, so that this SCR is momentarily reverse biased between anode and cathode. This reverse voltage turns SCR1 off provided the gate signal is not applied simultaneously to both gates. The current through the load will decrease to zero in an exponential fashion as C becomes charged.
Saturday, August 23, 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.
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.
Wednesday, August 20, 2014
Variable 5 to 20V DC Supply Rise
If you are looking for a low drop voltage regulator that can provide a power supply of 1A with an output voltage of between 5V and 20V DC, National Semiconductor LM2941 Low Dropout Adjustable Regulator is that you can pick to make use of. Its a typical dropout voltage of 0.5V which means that the input supply need only must be 0.5V DC over the desired output voltage. Its other features include internal short schema current limit and reverse battery protection.
As shown in the schematic below, the regulator has five pins which consists of the ON/OFF control, Input Voltage, Output Voltage, Ground & Adjustable pins. ON/OFF is used for the purpose of switching on & off of the regulator. The capacitors C1 & E1 are to be placed as close as feasible to the regulator.
The output of the schema can be varied by varying the worth of potentiometer VR1 from 5V DC to 20V DC. The input voltage is limited from five.5V DC to 30V DC. Resistor R1 must be greater than 1K. The worth of the VR1 that needs to be set is calculated from the formula given below:
If R1=1K, Vout = 5V, VR1 should be set to 2.9K ohm.
If R1=1K, Vout = 20V, VR1 should be set to 14.7K ohm
Sunday, August 17, 2014
11W 11W AMPLIFIER WITH DC VOLUME CONTROL
General Description:
TDA7495 is a stereo 11+11W class AB power amplifier assembled in the @ Multiwatt 15 package, specially designed for high quality sound, TV applications. Features of the TDA7495 include linear volume control, Stand-by and mute functions.
Circuit Diagram:
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| TDA7495 circuit diagram |
Monday, August 11, 2014
Dual Output dc dc Converter Wiring diagram Schematic
The Dual Output dc-dc Converter Circuit Diagram buck-boost configuration the MAX634 is well suited for dual output dc-dc converters. Only a second winding on the inductor is needed. Typically, this second winding is bifilar-primary and secondary are wound simultaneously using two wires in parallel.
The inductor core is usually a toroid or a pot core. The negative output voltage is fully regulated by the MAX634. The positive voltage is semi-regulated, and will vary slightly with load changes on either the positive or negative outputs.
Dual Output dc-dc Converter Circuit Diagram
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