Matt circuit

This is a project of Simple 12 Volt Charger Circuit Diagram with LM350.The strength supply routine structure is developed as a resource of continuous present with adverse heat range coefficient. Transistor Q1 (BD 140) is used as a heat range indicator. transistor Q2 is used to avoid the strength supply from discharging through R1 when strength is out of stock. Getting routine is developed depending on the LM350 present regulator IC. The result present of the battery charger can be altered between 13-15 V by various the POT R6.  Simple 12 Volt Charger Circuit Diagram with LM350 LM350 will try to keep the present decrease between the feedback pin and result pin at a continuous value of 1.25V. So there will be a continuous present circulation through resistor R1. Q1 act here as a heat range indicator with the help of R6/R3/R4 elements that are more or less manages the platform present of Q1. As relationship emitter / platform of transistor Q1, the same as other semiconductors, contai...

This is a simple Volt meters & ampere meter with PIC. This circuit used to measure voltage and current simultaneously. The series of volt meters & ampere meter with PIC16F876A PIC is used as a data processor voltage and current are measured.   Simple Volt meter Circuit Diagram   This circuit uses the viewer in the form of 16 × 2 LCD used for the data menmpilkan voltage and current measurements. In the article volt meter and ampere meter with PIC are discussed kerannya limited to devices only. More detail can be seen from the image sequence volt meter and ampere meter with PIC below. 

Good care given to your NiCad batteries will ensure a long life. However, they do need to be handled and charged with special care. It is therefore important to first discharge the NiCad to 1 Volt per cell, ensure that the battery is discharged, and then start the charge cycle. recommend a charge current of 1/10th the capacity for a duration of about 15 hours uninterrupted. In reality, we learn some hard lessons when we forget to switch the charger off after the 15 hours and find that one or more cells inside the battery no longer accept a charge. That is the very reason that the circuit above is fully automated. The only thing to do is connect the battery and press the 'Start' button. When the discharge cycle is finished the circuit switches over to charge for 15 hours. After the 15 hours the circuits maintains a trickle charge to keep the battery 'topped-up Before I go into the schematic details I like to explain some of the component descriptions in the schematic. Jan Ha...

Description Circuit showing a 9 volt power supply . Here we have used a bridge rectifier and 7809 ic for making this circuit.Where the ic regulate the output to 9 v,1 A .This voltage every time constant.Are you interested ? Circuit diagram with Parts list.    Notes.  If a current of 300 mA or above is required, fit a proper heat sink to the IC 7809 . If 1A bridge is not available, make one using four 1N 4007 diodes.

Don't get caught with a flat battery; this easy-to-build circuit 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...

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 a...

Battery Charger This Circuit have output voltage 14 volt with current maximum 4A . Can be use on nicad battery and accu , wet and dry . But the accu must be 12 Volt and have current 4A or higher. The current fillter voltage build of IC CA3140 or LM324 . You can which two IC.  From the AC voltage will be lowered by trafo and rectified by diode .You can use diode up to 4A, this voltage to be supply for circuit. See this 14 Volt Battery charger schematic circuit below : Click to view Enlarge

 500W 12 Volt to 220 Volt Inverter Circuit Diagram This is circuit Inverter 12VDC to 220V 50Hz 500W. It easy to make and low cost.

The linear power supply, shown in the schematic, provides 0-30 volts, at 1 amp, maximum, using a discrete transistor regulator with op-amp feedback to control the output voltage. The supply was constructed in 1975 and has a constant current mode that is used to recharge batteries. Circuit diagram : 0-30 Volt Laboratory Power Supply Circuit Diagram With reference to the schematic, lamp, LP2, is a power-on indicator. The other lamp (lower) lights when the unit reaches its preset current limit. R5, C2, and Q10 (TO-3 case) operate as a capacitor multiplier. The 36 volt zener across C2 limits the maximum supply voltage to the op-amps supply pins. D5, C4, C5, R15, and R16 provide a small amount of negative supply for the op-amps so that the op-amps can operate down to zero volts at the output pins (pins 6). A more modern design might eliminate these 4 components and use a CMOS rail-to-rail op-amp. Current limit is set by R3, D1, R4, R6, Q12, R10, and R13 providing a bias to U2 that partiall...

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. T...

This time I will post about the audio amplifier based on IC KA2204. In an audio amplifier circuit has a power output that can also be referred to as a low-grade resources that have only 6 Watts output with 4 Ohm impedance. Frequency response 30 Hz to 18 kHz . For the scheme can be seen below. Supply voltage and a maximum of at least 6 Volt to 18 Volt Part List R1 =  56R C1 = 1uF C2 = 220uF C3 = 100uF C4 = 47uF C5 = 1000uF C6 = 100nF C7 = 470pF C8 = 22pF C9 = 47uF C10 = 47pF

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...

Description : Even if the digital multimeter have dominated in a lot of applications, in the measurement, exist the need for existence of instruments of clue in various appliances, voltage and current, as in power supply or elsewhere. The circuits that give make this precisely the work, measure the voltage in terminal a circuit and the current that passes in his. The circuit does not present particular difficulties for somebody that has a small experience. The two circuits are the himself, with a small difference only in their input, when they have they measure voltage or current and in connection that concern decimal point [ dp ]. In the department of input IC1 and IC3, exist the CA3161E, that is a A/D Converter for 3-Digit Display. In the drive of Display IC2 and IC4, exist CA3161E, that is a BCD the Seven Segment Decoder/ Driver. As it appear in Fig.1, that concern the voltmeter in input [ + IN ], exist in series a what resistor R1 in combination with the R3 create a voltage divide...

Here is the circuit diagram of regulated power supply. It is a small power supply that provides a regulated voltage, adjustable between 1.5 and 35 volts at 1 ampere. This circuit is ready to use, you just need to add a suitable transformer. This circuit is thermal overload protected because the current limiter and thermal overload protection are included in the IC. Picture of the circuit: 1A Regulated Power Supply Circuit Schematic Circuit diagram: 1A Regulated Power Supply Circuit Diagram Transformer selection chart: Transformer selection Guide-Table For Power Supply Parts: IC = LM317 P1 = 4.7K R1 = 120R C1 = 100nF - 63V C2 = 1uF - 35V C3 = 10uF - 35V C4 = 2200uF - 35V D1-D4 = 1N4007 Features: Just add a suitable transformer (see table) Great to power your projects and save money on batteries Suitable as an adjustable power supply for experiments Control DC motors, low voltage light bulbs, … Specifications : Preset any voltage between 1.5 and 35V Very low ripple (80dB rejection) Short...