AC-DC & DC-DC Circuits
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This power supply will work accurately where you have the need of stable 18V DC and provides current upto 1. 5A. The circuit is using a LM7818 positive voltage regulator IC. This IC has many built in features like internal current limiting, short circuit.... -
A 24V DC power supply circuit using LM7824 IC. LM7824 is a 24V 1. 5A fixed output voltage regulator IC, available in TO 220 package. It is an IC of LM78xx series, this series contains many fixed output voltage ICs like LM7815 is designed for fixed 15V output.... -
The circuit is using a 230V AC OR 110V AC to 9V-0-9V step down center tapped transformer to step down the mains voltages. Four 1N4001 diodes are used for rectification of the AC voltage to DC. A 2200uF / 25V electrolytic capacitor is used the filter the.... -
LM 317T power supply circuit. This power supply is very simple and timeless, contain very few components and will give very stable, regulated adjustable / variable output.... -
The affection of the ability accumulation is a Tamura 3FD-410 5V bifold primary/dual accessory transformer. These are accessible from DigiKey. com for reasonable prices. Normally, the transformer`s primary windings would be affiliated in alternation for.... -
If you wish to use a double power supply but don`t have a center trapped transformer you can use an electronic circuit in the following configuration. This electronic circuit uses a second rectifier bridge coupled with secondary coil of the transformer using.... -
The switching power supply provides 12 volts, at 10 amps, maximum, using a discrete transistor regulator with an op-amp functioning as a comparator in the feedback circuit. With reference to the schematic, the front panel power-on light is not shown. There.... -
Many circuits can be powered directly from the mains with the aid of a series capacitor (C1). The disadvantage of this approach is that usually only one half cycle of the mains wave-form can be used to produce a DC voltage. An obvious solution is to use a.... -
This circuit can be used where a high current is required with a low-ripple voltage (such as in a high-powered class AB amplifier when high-quality reproduction is necessary). Q1, Q1 and R2 can be regarded as a power Darlington transistor. ZD1 and R1 provide.... -
This project details the design of a very low dropout adjustable power supply. A good power supply is essential to electronic projects. While there are many existing designs for adjustable power supplies, this one makes improvements that make it more useful.... -
These power supply circuits are generating 500 volts but they may be modified to supply a couple of hundred to nearly 1000 volts by changing the zener diodes. These circuits generate high voltages and can cause dangerous shocks! Do not build these devices.... -
You need center tap transformer. for example, if you need 12v output, you should connect J1 to 15v transformer output, J2 connected to 0v and J3 connected to another 15V. .. -
Here is a very low-cost protection circuit to save your electrically operated home appliances, such as TV, DVD player, refrigerator, and other instruments during sudden tripping and resumption of mains supply. Appliances like refrigerators and air.... -
This article was originally published (in a slightly modified form) in the QST magazine, December 1998 and January 1999, and in the Radio Amateur`s Handbook, 1999. Visit the American Radio Relay League for information on these publications, and a world of.... -
This is a aerial affection ability accumulation with a continuously capricious stabilised achievement adjustable at any amount amid 0 and 30VDC. The ambit additionally incorporates an cyberbanking achievement accepted limiter that finer controls the.... -
Another adjustment of application opamps to adapt a ability accumulation is apparent below. The ability agent requires an added ambagious to accumulation the op-amps with a bipolar voltage (+/- 8 volts), and the abrogating voltage is additionally acclimated.... -
How to create dual power supply unit using single battery for your lab prupose Dual voltage power supplies are required particularly for op amp experiments and some of the instrumentation amplifiers. Some low power audio pre amplifiers also uses dual voltage.... -
A simple 12V to 24V dc dc converter circuit with diagram built around LM324. This boost converter with schematic can provide up to 800mA output current and a steady 24V DC.... -
This 1. 3V power supply can be used as replacement for the 1. 3V Mercury Cell in any circuit. When the input 5V is given to the circuit, the voltage drop across zener diode D1 will be around 2V. The diode D2 will drop a 0. 7 V from the 2V volt and the.... -
A 5V power supply using IC 7805 is designed and explained with a neat circuit diagram.... -
For circuits using TTL ICs the supply voltage is a great concern and a slight increase in supply from the rated 5V may damage the IC. Using fuses alone does not solve the problem because a fuse may take several milliseconds to blow off and that`s enough time.... -
Here is the circuit diagram of a 5V transformer less power supply using minimum components. The working of this circuit is quite simple. Resistor R1 does the job of current limiting and bridge D1 rectifies the mains voltage. The Zener diode regulates the.... -
A simple and efficient 6 to 15V boost/stepup dc to dc converter based on IC L2585. This voltage converter circuit requires few external components.... -
Dual adjustable power supply circuit with diagram using IC LM 317 and LM 337. This variable power supply circuit has a range of 1.2 Volts to 30 Volts.... -
This dual power supply is based on the L165 power operational amplifier from SGS-Thomson Micro electronics. The IC L165 can easily deliver up to 3. 5A of current (internally limited). The IC is available in Pentawatt package and is very suitable for power.... -
The circuit given here is of a regulated dual power supply that provides +12V and -12V from the AC mains. A power supply like this is a very essential tool on the work bench of an electronic hobbyist. The transformer T1 steps down the AC mains voltage and.... -
A simple dc to dc step up voltage converter circuit schematic using LM2700-which is a step up switching converter.... -
A simple transformerless power supply circuit with diagram and schematics that gives 5 volts dc output.This is a low cost,low current power supply circuit suitable for simple applications like power an LED.... -
A reliable 6 to 12 volts Voltage converter circuit and diagram using audio amplifier IC TDA 2003. This Voltage doubler circuit can be assembled on a Vero board.... -
5v regulated power supply circuit, 5v power supply circuit, regulated power supply circuit diagram.... -
This is a simple 12v power supply circuit diagram. It has a fixed voltage output and it based on LM7812 voltage regulator IC.... -
The Circuit Diagram shows a voltage regulator meeting these requirements that is built from discrete components. The two sets of component values are for a voltage of 6. 3 V (upper) and 12. 6 V (lower). Component: BC547 and BC557 Transistor, Diode, Preset,....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
Popular Circuits
Some relays will become warm if they remain energized for some time. The circuit shown here will...
A simple lab power supply electronic project can be designed using this circuit diagram which is...
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The Geiger counter is a scientific instrument that can detect ionising radiation such as alpha...
Constituted by a 5V TOP414G, 2A output isolated switching power supply circuit is shown. C1 is...