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Showing posts with label converter. Show all posts

Friday, December 12, 2014

6v 12vdc converter circuit

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.he circuit is simple, about 75% efficient and quite useful.

By changing just a few components, you can also modify it for different voltages.

Wednesday, November 19, 2014

Simple Sound to Light Converter Schematic Diagram

Simple Sound-to-Light Converter Schematic Diagram

Figure 1 shows a simple ambit for converting an audio arresting (such as one that comes from the apostle terminals of a CD player). The ambit basically consists of a buffer/amplifier date and three clarify circuits: a high-pass filter, a mid-pass filter, and a low-pass filter. The achievement of anniversary clarify ambit drives a light-emitting diode of altered color.

The ascribe arresting is fed to the absorber date through C1. The ethics of RF and RV1 should be called so that the absorber is able to drive the three filters absorbed to its output. The low-frequency, mid-frequency, and high-frequency apparatus of the ascribe arresting are alone accustomed to canyon through the low-pass clarify (bottom filter), the mid-pass clarify (middle filter), and the high-pass clarify (topmost filter), respectively, appropriately amid them from anniversary other.

Changes in the achievement of a clarify account its agnate achievement LED to about-face on and off. In effect, agriculture a connected audio arresting to the ascribe of this ambit causes the LEDs to dance.

Friday, November 14, 2014

LIGHT TO FREQUENCY CONVERTER CIRCUIT

This is the circuit diagram of a effective light to frequency converter circuit that can be used for variety of applications such as light intensity measurement,fun etc. This circuit is based on TLC555, the CMOS version of famous timer IC NE 555. A photo diode is used for sensing the light intensity. The timer IC is wired in astable mode. The leakage current of the reverse biased photo diode is proportional to the light intensity falling on it. This leakage current charges the capacitance C1. When the capacitor voltage reaches 2/3 of the supply voltage the out put (pin 3) goes low. As a result the capacitor discharges through photo diode .When the capacitor voltage reaches 1/3 the supply voltage the out put (pin 3) of IC goes high. This cycling continues and we get a frequency at pin 3 proportional to the light intensity falling on the photo diode.

Light to Frequency Converter Circuit Diagram & Parts List

Points to remember

With the given components the frequency varies from 1KHZ @ complete darkness to 24 Khz @ bright sunlight.The frequency range can be changed by using different values for C1.
Use any general purpose photo diode for D1.

ANALOG TO DIGITAL CONVERTER A D

This type of converter is used to convert analog voltage to its corresponding digital output. The function of the analog to digital converter is exactly opposite to that of a DIGITAL TO ANALOG CONVERTER. Like a D/A converter, an A/D converter is also specified as 8, 10, 12 or 16 bit. Though there are many types of A/D converters, we will be discussing only about the successive approximation type.

Successive Approximation Type Analog to Digital Converter

A successive approximation A/D converter consists of a comparator, a successive approximation register (SAR), output latches, and a D/A converter. The circuit diagram is shown below.

The main part of the circuit is the 8-bit SAR, whose output is given to an 8-bit D/A converter. The analog output Va of the D/A converter is then compared to an analog signal Vin by the comparator. The output of the comparator is a serial data input to the SAR. Till the digital output (8 bits) of the SAR is equivalent to the analog input Vin, the SAR adjusts itself. The 8-bit latch at the end of conversation holds onto the resultant digital data output.

Working

At the start of a conversion cycle, the SAR is reset by making the start signal (S) high. The MSB of the SAR (Q7) is set as soon as the first transition from LOW to HIGH is introduced. The output is given to the D/A converter which produces an analog equivalent of the MSB and is compared with the analog input Vin.

If comparator output is LOW, D/A output will be greater than Vin and the MSB will be cleared by the SAR. If comparator output is HIGH, D/A output will be less than Vin and the MSB will be set to the next position (Q7 to Q6) by the SAR.

According to the comparator output, the SAR will either keep or reset the Q6 bit. This process goes on until all the bits are tried. After Q0 is tried, the SAR makes the conversion complete (CC) signal HIGH to show that the parallel output lines contain valid data. The CC signal in turn enables the latch, and digital data appear at the output of the latch. As the SAR determines each bit, digital data is also available serially. As shown in the figure above, the CC signal is connected to the start conversion input in order to convert the cycle continuously.

The biggest advantage of such a circuit is its high speed. It may be more complex than an A/D converter, but it offers better resolution.

Thursday, November 6, 2014

Converter Circuit 240V AC TO 5VDC POWER SUPPLY used 7805 Regulator

This is simple way to power some 5v logic from a 240v ac source. If a 120v ac power adapter is used, the circuit will also work for 120v ac power lines.

Monday, October 13, 2014

Latest IC Power Supply Schematic using DC DC Converter

This is an IC power supply schematic to provide +15V to all of the IC chips using two Lambda DC/DC converters. One 24V/15V DC/DC converter, Lambda PM10-24D15, will be used to provide +15V to the UC3825BN PWM IC, the IR2110 gate driver IC’s, and the ISO124 isolation IC.

Saturday, September 6, 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.

Mosfet Snubber Flyback Converter Circuit

Mosfet Snubber Circuit in Flyback Converter , Typical flyback convertor with drain clamping circuits ZenBlock Zener with integrated blocking diode Philips Semiconductors new ZenBlockTM replaces double-diode-, RCD- or RC-snubbers in flyback convertors.

Mosfet Snubber Flyback Converter Circuit

The new components offer circuit designers the important benefits of lower component count and board usage, reduced EMI, optimal clamping at all loads and higher efficiency. Introducing The new ZenBlock combines the double diode snubber in one package. This leads to the following advantages:

-Fewer components.

-Reduced circuit board space

-Lower EMI by reducing the drain clamp circuit length and area.

-Optimal clamp performance at all loads (compared with RCD and RC snubber)

-Higher efficiency at low loads (compared with RCD and RC snubber) . Previous circuit related to this circuit : Protection of the Mosfet in flyback power supply

Wednesday, August 27, 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 diagram 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 schema will provide a 2.5V output at a maximum current of 1.2A from an input voltage of 12 volts. Second schema will provide a 5V output at a maximum current of 1.2A from an input voltage of 12 volts.

Tuesday, August 26, 2014

Simple F and V Converter Wiring diagram Schematic

This is a best Frequency/Voltage Converter schema diagram proportional voltage by the use of a frequency-to-voltage (F/V) converter. Teledyne Semiconductor`s Type TSC9402 is a versatile IC. Not only can it convert voltage into frequency, but also frequency into voltage. It is thus eminently suitable for use in an add-on unit for measuring frequencies with a multimeter.

Best F and V Converter Circuit Diagram

Only a few additional components are required for this.. Just one calibration point sets the center of the measuring range (or of that part of the range that is used most frequently). The frequency-proportional direct voltage at the output (pin 12â€”amp out) contains interference pulses at levels up to 0.7 V. If these have an adverse effect on the multimeter, they can be suppressed with the aid of a simple RC network.

The output voltage, U0, is calculated by: tfo=C/rei(Ci + 12 pF) R2fm Because the internal capacitance often has a greater value than the 12 pF taken here, the formula does not yield an absolute value. The schema has a frequency range of dc to 10 kHz. At 10 kHz, the formula gives a value of 3.4 V. The schema draws a current of not more than 1 mA.

Sourced By : Circuitsstream

Friday, August 22, 2014

5V 2A Dc Converter Using LT3980 Wiring diagram Schematic

Using LT3980 manufactured by Linear Technology can be designed a very simple 5 volts dc converter schema.

5V 2A Dc Converter Circuit Diagram

The LT3980 has an adjustable frequency from 100kHz to 2.4MHz and accepts input voltages up to 58V . The transient voltage of the LT3980 is around 80 volts . The maximum output current which can be delivered by the LT3980 monolithic buck switching regulator is around 2 Amps .

Main features of the LT3980 monolithic buck switching regulator are : wide input range from 3.6V to 58V , overvoltage lockout protects diagram through 80V transients , 2A Maximum Output Current , low ripple (<15mVP-P) Burst Mode, aAdjustable switching frequency: 100kHz to 2.4MHz ,low shutdown current: IQ < 1μA, thermal protection, Soft-Start Capability . Link

Thursday, August 21, 2014

3V to 40 Volt DC Converter Circuit

Switching regulator subsystems intended for use asdc to dc converters. 3V to 40 Volt DC Converter circuit | The use of switching regulators is becoming more pronounced over that of linear regulators because the size reductions in new equipment designs require greater conversion efficiency. Another major advantage of the switching regulator is that it has increasednapplication flexibility of output voltage. The output can be less than, greater than, or of opposite polarity to that of the input voltage.

The MC34063 series is a monolithic control circuit containing all the active functions required for dc to dcconverters. This device contains an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active peak current limit circuit, driver, and a high current output switch. This series was specifically designed to be incorporated in step–up, step–down and voltage–inverting converter applications. These functions are contained in an 8–pin dual in–line package.

FEATURES 3V to 40 Volt DC Converter :
· Wide Input Voltage Range 3 V to 40 V
· Precision Internal Reference 2%
· High Output Switch Current Up to 1.5 A
· Short-Circuit Current Limiting
· Adjustable Output Voltage
· Low Standby Current
· Oscillator Frequency Up to 100 kHz

Thursday, August 14, 2014

Speaker to microphone converter circuit

This schema is a simple approach for converting a loud speaker into a microphone. When the sound waves fall on the diaphragm of a speaker, there will be fluctuations in the coil and there will be a small proportional induced voltage. Usually this induced voltage is very low in magnitude and useless. Here in the schema the low voltage is amplified using transistors to produce a reasonable output. The transistor Q1 is wired in common base mode and produces the required voltage gain. The transistor Q2 is wired as an emitter follower to produce enough current gain. The voice quality of this schema will not be as much as a conventional microphone but quite reasonable quality can be obtained. To set up the schema, keep the preset R2 at around 10 Ohms and connect the battery. Now adjust R2 to obtain the optimum sound quality.

Notes.

* Assemble the schema on a general purpose PCB. * Power the schema from a 9 V PP3 battery. * A 3 inch speaker can be used as K1. * All capacitors must be rated at least 15V. * An 8 Ohm speaker or head phone can be connected at the output to hear the picked sound.

Tuesday, August 12, 2014

Simple Unipolar to Dual Supply Converter Wiring diagram Schematic

Simple Unipolar to Dual Supply Converter Circuit Diagram. 817V The outputs in this schema are independently variable and can be loaded unsymmetrically. The output voltage remains constant, irrespective of load and changes. By varying potentiometers R2 or R6, the output voltages can be conveniently set. Outputs can be varied between 8 and 17 V, so that the standard Â±9, Â±12, and Â±15 V settings can be made.

Unipolar to Dual Supply Converter Circuit Diagram

This converter is designed for a maximum load current of 1 A and the output impedance of both supplies of 0.35 0. This schema is not protected against shortdiagram, but uses the protection provided by the de input source. This schema is ideal for biassing operation amplifier diagram.