Power supplies electronic circuits
You need a power supply for your laboratory? Here are some electric diagrams of several types of power supply: high power, stabile voltage, battery charger, variable voltage etc.
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Variable voltage power supply for laboratories. With two ICs can take different output voltage and amperage.... [read]
This is a Regulated DC power supply with short circuit protection and with current limiter. It delivers safely around 20Amps at 13.8V... [read]
This circuit controls resistive and inductive loads up to 2,500W. Its main functional device is an integrated phase control circuit - Siemens TLE3103.... [read]
Using this circuit you can convert the 12V dc in to the 220V Ac.... [read]
This inverter circuit can provide up to 800mA of 12V power from a 6V supply... [read]
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.... [read]
A battery is a vital element of any battery-backed system. In many cases the battery is more expensive than the system it is backing up. Hence we need to adopt... [read]
This dual polarity power supply is easy to build, requires few parts, and is adjustable from 0-15 volts.... [read]
In this circuit, the 7815 regulatates the positive supply, and the 7915 regulates the negative supply.... [read]
The following circuit Diagram of (DUAL VOLTAGE POWER SUPPLY ) can be used for Misc.. application. It requires a few components to built. The most important... [read]
The circuit of automatic emergency light presented here has the following features: 1. When the mains supply (230V AC) is available, it charges a 12V battery... [read]
This circuit is based on simple Ohms law. It uses voltage drop on a resistor to determine current strength and turns device off if it's to high. Circuit is... [read]
The fixed voltage power supply is useful in applications where an adjustable output is not required. This supply is simple, but very flexable as the voltage... [read]
This is an efficient flyback driver for modern cylindrical rectified television flybacks. Many sites doesn't provide circuits driving these transformers, they... [read]
This device monitors a fuses in your circuits. LED turns on when fuse is blown.... [read]
The power line fluctuations and cut-offs cause damages to electrical appliances connected to the line. It is more serious in the case of domestic appliances... [read]
Voltage variations and power cuts adversely affect various equip- ment such as TVs, VCRs, music systems and refrigerators. This simple circuit will protect... [read]
High current power supply circuit diagram with 2n3055. Voltage is stabilised.... [read]
high voltage power supply is a very useful source which can be effectively used in many applications like biasing of gas-discharge tubes and radiation detectors... [read]
Have you ever wanted to run a TV, stereo or other appliance while on the road or camping? Well, this inverter should solve that problem.... [read]
If you have ever worked with lasers, you know how fun and interesting it can be, you also know how expensive it can be. The high voltage power supplies for... [read]
A truly timeless circuit. LM317 is a versatile and highly efficient 1.2-37V voltage regulator that can provide up to 1.5A of current with a large heat sink.... [read]
The LM317T is a adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5 amps over an output range of 1.25 to 37 volts. The device... [read]
The LM317T output current can be increased by using an additional power transistor to share a portion of the total current. The amount of current sharing is... [read]
Opamps are very useful. But one of their major drawbacks is the requirement of a dual supply. This seriously limits their applications in fields where a dual... [read]
The NiCd charger takes approximately 12-15 hours of charge at 50mA (For AA-batteries).... [read]
This simple charger uses a single transistor as a constant current source.... [read]
This over/under voltage cut-out will save your costly electrical and electronic appliances from the adverse effects of very high and very low mains voltages.... [read]
Portable CD Player Adapter For Car. Changes 12V voltage from your car, to 9 or less volts for cd player or some other device.... [read]
Most of the power supply failure indicator circuits need a separate power supply for themselves. But the alarm circuit presented here needs no additional supply... [read]
If you own a motorcycle, a motor home, a caravan, a lawn mover, a day cruiser or maybe a vintage car you must at some point had to write off a lead acid battery.... [read]
Current rectifier for large loads without large capacitors. It uses transistor 2N3055 as an active component.... [read]
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,... [read]
One of the main features of the regulated power supply circuit being presented is that though fixed-voltage regulator LM7805 is used in the circuit, its output... [read]
A simple but less efficient method of controlling a DC voltage is to use a voltage divider and transistor emitter follower configuration.... [read]
This very simple circuit uses a transformer ,two diodes , a capacitor and an ammeter. To charge a battery just connect the + and - terminals of the circuit... [read]
This circuit is intended for charging lead-acid batteries with a solar panel. The customary diode that prevents the battery from discharging through the solar... [read]
The ckt is built around two 555 timer ICs. U1 and U2. U1 is wired as a variable duty cycle oscillator with a constant time period of around 0.1 second. Duty... [read]
This supply uses no heavy step down transformer and has an extremely low parts count.... [read]
Power supplies that are intended to be used with TTL logic circuitry must guard against over-voltage, which can destroy TTL chips very rapidly. The duration... [read]
The circuit is a MOSFET based linear voltage regulator with a voltage drop of as low as 60 mV at 1 ampere. Drop of a fewer millivolts is possible with better... [read]
A Variable DC Power Supply is one of the most useful tools on the electronics hobbyist's workbench.... [read]
Using the versatile L200 voltage regulator, this power supply has independent voltage and current limits. Voltage output from about 3 to 15 volts.... [read]
This simple circuit is a good solution to the powering a dual supply op amp from a single battery problem. The circuit simply takes a positive voltage and... [read]
This simple and inexpensive circuit can produce a dual voltage from a single supply input.... [read]
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Alarms, control, timers
- Audio
- Tools and measuring
- Power supplies
- Light and LED
- Radio
- Telephone related
- Miscellaneous
- For your car
- PC related
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