This circuit is a simple form of the commercial UPS, the circuit provides a constant regulated 5 Volt output and an unregulated 12 Volt supply. In the event of electrical supply line failure the battery takes over, with no spikes on the regulated supply. Notes: This circuit can be adapted for other regulated and unregulated voltages by using different regulators...
Sunday, September 21, 2014
Saturday, September 20, 2014
13V 2A PSU For Handheld Rigs
This compact 13-V/2-A power supply for ham radio rigs and other VHF/UHF portable PMRs is based on the STR2012/13 voltage regulator IC from Sanken Electric Co. Many power supplies for handheld amateur radio rigs are based on the LM317, LM350 or even the good old LM723. Unfortunately, these regulators are invariably associated with a fair number of external components, while...
STK4038 60W Amplifier Circuit
STK4038 is an built in AF power amplifier that will deliver 60 watts of output power into a 4 ohm load. The internal fixed current circuitry reduces switch ON/OFF clicks. The IC supports the addition of external circuits for thermal shutdown, pop noise reduction, output short circuit protection etc. The 60 watt amplifier is designed Depending about the datasheet and performs...
LED flasher Circuit using NE555
This is a LED flasher Circuit using NE555. This schema consumes more power, but its advantage is when you need a variable flash rate, like for strobe diagram. You can actually use this schema as a remote control for strobes that have a remote input. Of course, it has many other applications besides strobes.R1, R2, C1 and the supply voltage determine the flash rate. Using a...
Simple 5 Zone alarm Wiring diagram Schematic
This is a complete alarm system with 5 independent zone ssuitable for a small office or home environment. It uses just 3CM IC`s and features a timed entry / exit zone, 4 immediate zones and a panic button. There are indicators for each zone a“system armed” indicator. The schematic is as follows:5 Zone alarm Circuit DiagramCircuit Notes:Each zone uses a normally closed contact....
Phantom Supply From Batteries
Professional (directional) microphones often require a phantom supply of 48 V. This is fed via the signal lines to the microphone and has to be of a high quality. A portable supply can be made with 32 AA-cells in series, but that isn’t very user friendly. This circuit requires just four AA-cells (or five rechargeable1.2 V cells). We decided to use a standard push-pull converter,...
Accu charger with IC LM723C
Circuit of 12 V accu / battery charger with IC LM723C. This Accu charger have input from the first transformer - voltage 220 initially V/110V/240V, the input voltage lowered approximately 12 VAC, then voltage 12 Volts will be rectified by D1 and then filtered by C1 , then filtered and amplified again by IC LM723 and NPN transistor , output voltage is ready to use to...
Friday, September 19, 2014
Gentle Battery Regulator
This small but very effective circuit protects a lead-acid battery (12-V solar battery or car battery) against overcharging by a solar module when the incident light is too bright or lasts too long. It does so by energizing a fan, starting at a low speed when the voltage is approximately 13.8 V and rising to full speed when the voltage exceeds 14.4 V (full-charge voltage)....
Ford E250 Engine Compartment Fuse Box DIagram
Ford E250 Engine Compartment Fuse Box DIagram - Here are new post for Ford E250 Engine Compartment Fuse Box DIagram.Ford E250 Engine Compartment Fuse Box DIagram Fuse Panel Layout Diagram Parts: A/C heater, remote keyless entry module, powertrain control module, PCM power relay, electroni brake, power seats, power lumbar seats, blower motor relay, ignition switch, fuel pump...
Schematic Audio Power Amplifier with IC TDA2822
TDA2822 is manufactered by PHILIPS , its based on this amplifier . Minimum voltage 3 volts and maximum voltage 15 volts. Power output 2 x 1,8 stereo with 4 Ohm impedance. Quiescent current 6 mA , sensitive input is 30 Hz to 18 kHz. See circuit diagram below...
Fuse Box BMW 1992 325i Power Distribution Diagram
Fuse Box BMW 1992 325i Power Distribution Diagram - Here are new post for Fuse Box BMW 1992 325i Power Distribution Diagram.Fuse Box BMW 1992 325i Power Distribution Diagram Fuse Panel Layout Diagram Parts: normal speed relay, horn relay, hhig beam relay, low beam relay, inloader relay, fog light rel...
TDA8922 Audio Amplifier 2x25W
TDA8922general description:The TDA8922 is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 25 W. The device is available in the HSOP24 power package with a small internal heatsink and in the DBS23P through-hole power package. Depending on the supply voltage and load conditions, a very small or even no external...
Fuse Box BMW 528I 1982 Diagram
Fuse Box BMW 528I 1982 Diagram - Here are new post for Fuse Box BMW 528I 1982 Diagram.Fuse Box BMW 528I 1982 Diagram Fuse Panel Layout Diagram Parts: normal speed relay, high speed relay, low beam check relay, high beam relay, low beam relay, fog light relay, main relay, purge valve relay, fuel pump relay, horn relay, wiper control unit, unloader rel...
Thursday, September 18, 2014
Fuse Box Ford 1996 Mustang Diagram
Fuse Box Ford 1996 Mustang Diagram - Here are new post for Fuse Box Ford 1996 Mustang Diagram.Fuse Box Ford 1996 Mustang Diagram Fuse Panel Layout Diagram Parts: Turn Signal Lamps, Back-Up Lands, Rear Defroster, Top Relay Coil, Iluminated Entry Module, Hego (5.0), ABS, Low Oil Module, Low Coolant Module, Airbag Module, DRL Module, Safety Cluster Chime, Cluster Warning Lamps,...
150W Audio Power Amplifier
For an amplifier with 150 Watt in power, may be this is the cheapest one . This amplifier schema built based on two Darlington power transistors TIP 142 and TIP 147, this schema can deliver a blasting 150 W Rms to a 4 Ohm speaker.TIP 147 and 142 are complementary Darlington pair transistors which can handle 5 A current and 100V, famous for their ruggedness. Here two BC 558...
Class AB Power Amplifier Circuit 30w Using Power Transistor
Class AB Power Amplifier Circuit Diagram30W Class AB power amplifier schema diagram using power transistor. Set the above amplifier up by adjust the variable resistor R1 to maximum and R12 to zero. After this set up is done, the activate / turn on the amplifier. Adjust the R1 so that the measured output offset is between 30 and 100mV. Once set, adjust the R12 slowly to achieve...
Fuse Box Toyota 1997 Corolla Kick Panel Diagram
Fuse Box Toyota 1997 Corolla Kick Panel Diagram - Here are new post for Fuse Box Toyota 1997 Corolla Kick Panel Diagram.Fuse Box Toyota 1997 Corolla Kick Panel Diagram Fuse Panel Layout Diagram Parts: cigar lighter, digital clock display, air conditioning, radio, cassette tape player, tail light, parking lamp, instrument panel light,electric cooling fan, multiport fuel injection,...
Motional Feed Back Amplifier
This concept has appeared long back in Practical Electronics a UK based Magazine. Based on this concept I designed this circuit during 1981 to 1986 with lots of field trials and modifications, the design was frozen in 1986. I have assembled so many amplifiers for me and for my friends based on this design with various power levels. They are still kicking in so many houses....
Electronic Fuse for DC Short Circuit Protection
This is an electronic fuse that protects the load against short schema.Project DescriptionRelays must be chosen with a voltage value equals to the input voltage. Don’t omit using the 100uF capacitor with appropriate voltage value with respect to the input voltage. If you can’t provide, you can use C106 instead of BRX46.You can adjust the current with using 10K potentiometer....
Wednesday, September 17, 2014
Stereo STK013 audio amplifier circuit
On the amplifier circuit using ic STK, the same as my previous posting. However, in the above circuit has 2 inputs and 2 outputs, or commonly called a stereo amplifier. This issue of power amplifier 2 x 18Watt and has impedance 8. To stress that it takes about 35-38Volt.Component list :ResistorR1 = 390KR2 = 390KR3 = 220KR4 = 220KR5 = 220KR6 = 220KR7 = 100RR8 = 1RR9 =...
Fuse Box Toyota 1990 Supra Electrical Instrument Diagram
Fuse Box Toyota 1990 Supra Electrical Instrument Diagram - Here are new post for Fuse Box Toyota 1990 Supra Electrical Instrument Diagram.Fuse Box Toyota 1990 Supra Electrical Instrument Diagram Fuse Panel Layout Diagram Parts: wiper relay, A/C amplifier, ABS system, A/C system amplifier, engine oil level, cruise control, A/C auto relay, fog light relay, bulb check relay,...
Simple Radiator Temperature Iindicator
This radiator temperature indicator can be designed using electronic schema diagram bellow .Temperature indicator consists of two special zener diode, D1 and D2, connected in series to ensure accuracy of 5.96 V Zener voltage at 25 ° C. As long as the radiator temperature not exceeding 50 ° C, thermal indicator will flash a green LED, one orange will be provided for temperatures...
M 3482 Alarm Water Sensor Circuit
This is an easy musical alarm circuit that produces a musical tone when water or some conducting liquid comes in contact with the two sensor wires provided. The circuit is based on four transistors and one melody generator IC (M 3482).When water comes in contact with the sensors wires A & B, the base of Q1 gets connected with the negative and it conducts. This makes Q2...
Using TDA7056 3W BTL Mono Audio Power Amplifier
For mono output amplifier application, TDA7056 IC can be your option. Compact but powerful, this integrated schema is contained in a 9 pin medium power package. This device is designed for battery fed portable equipments such as mono recorders, radios and television. To attract the market, TDA7056 has many features such as low power consumption. For more reliable...
Tester for Inductive Sensors Circuit Diagram
This tester uses a LED to indicate whether an inductive sensor is generating a signal. It can be used to test the inductive sensors used in ABS and EBS systems in cars, with engine cam- shafts and flywheels, and so on. The circuit is built around an LM358 dual opamp IC. The weak signal coming from the sensor (when the wheel is turning slowly,...
Tuesday, September 16, 2014
Fuse Box Toyota 1995 Supra For The Amplifier Diagram
Fuse Box Toyota 1995 Supra For The Amplifier Diagram - Here are new post for Fuse Box Toyota 1995 Supra For The Amplifier Diagram.Fuse Box Toyota 1995 Supra For The Amplifier Diagram Fuse Panel Layout Diagram Parts: blower motor, center airbag, sensor assembly, cigar lighter, cigar lighter illumination, airbag squib, ashtray illumination, auto antenna control relay, clutch...
7 Watt Audio Amplifier Using TDA2003
Amplifier Circuits Diagram Schematic diagram of a simple 7 watt audio amplifier using TDA2003 Amplifier IC. This is a good IC with many built in features like low harmonic distortion, short circuit protection,thermal overload protection etc. This IC is a upgrade version of TDA 2002 amplifier IC. 7 Watt Audio Amplifier Circuit Diagram : The circuit is small and using only...
Fuse Box Toyota 1996 Corolla Diagram
Fuse Box Toyota 1996 Corolla Diagram - Here are new post for Fuse Box Toyota 1996 Corolla Diagram.Fuse Box Toyota 1996 Corolla Diagram Fuse Panel Layout Diagram Parts: cigar lighter, digital clock display, air conditioning system, radio, cassette type player, power rear view mirror, tail light, parking light, license plate light, instrument panel light, multiport fuel injection...
Fuse Box Toyota 2000 Celica GT Diagram
Fuse Box Toyota 2000 Celica GT Diagram - Here are new post for Fuse Box Toyota 2000 Celica GT Diagram.Fuse Box Toyota 2000 Celica GT Diagram Fuse Panel Layout Diagram Parts: cigar lighter, sunroof, door lock, stop lamp, fog light, washer, wiper, radio, turn signal, heater, taillight, multi fuse, defogger, Ignition relay, taillight control rel...
Mercedes Explanation Fuse Box Year 1988 190 E 2 3 Diagram
Fuse Box Mercedes 1988 190 E 2.3 Diagram - Below is Fuse Box Mercedes 1988 190 E 2.3 Diagram.Fuse Box Mercedes 1988 190 E 2.3 Diagram Fuse Panel Layout Diagram Parts: combination relay, anti theft alarm, turn/hazard signal, heated rear window wiper motor, power window relay, washer relay, intake manifold, pre heater, power seat relay, auxiliary fuse, power seat, headla...
Low drop Regulator with Indicator Wiring diagram Schematic
Even today much logic is still powered from 5 volts and it then seems obvious to power the schema using a standard regulator from a rectangular 9-V battery. A disadvantage of this approach is that the capacity of a 9-V battery is rather low and the price is rather high. Even the NiMH revolution, which has resulted in considerably higher capacities of (pen-light) batteries,...
Monday, September 15, 2014
New architecture silicon microwave power transistor
Above is a new architecture of the transistor which is applied in high voltage vertical FET (HVVFET ™) to achieve high operating voltage and very high power packaging density. This approach offers many advantages to designers of power amplifiers.High voltage solutions help designers to simplify the matching circuit discrete devices. Achieving high power through the...
