AC-DC & DC-DC Circuits
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A power supply with frequent energy switching; but the schematic is incomplete. I should add another circuit which controls the voltage polarity converter (Four transistors). The circuit generates high frequency current pulses. @CamilStaps Actually I didn`t.... -
With a 9 V DC battery, it worked fine. But because of a less DC power, solenoid was not generating a powerful enough force. I modified a computer power supply as the power source. Now when providing +12 V (15. 0 A) power from it, the solenoid valve is pulled.... -
Ripple-free, Short-circuit protected variable output voltage and current power supply in this website is verified project.circuit diagram with description of power supply circuit various power supply circuit ... -
Here is the variable high voltage dc power supply circuit, which we can customize the output voltage from 0 to 311Vdc, and it is protected the current over limit that we define at about 100 mA. The power MOSFET Q1 is controlled the current output, with using.... -
Texas Instruments introduced TPS54618, 6-A step-down SWIFT DC/DC converter. The new TPS54618 monolithic synchronous switcher with two integrated 12-milliohm.... -
For household or industrial application purpose, we are bound to use fixed ac voltage input. If we try to use this variable ac voltage as input to our regular usage machinery, such as lamps, fans, TV etc. then it would cause severe damage to our instruments..... -
The circuit in the schematic below is an improved piece of generator electronics. This is an unregulated switcher. Its function is to make the instrument as loud as possible while keeping the CPU running as long as possible. It transfers electrical energy.... -
The power transformer has three secondaries: 720V at 120mA center-tapped for the plate and screen supplies, 6. 3V at 3. 5A for the tube filament and bias power supply, and 5V at 3A (not used). Since the 5V secondary is not used, a little more current than.... -
An electronic recitification circuit. The use of large, heavy and expensive electrolytic capacitors is avoided, being replaced by an active transistor in this gyrator circuit. To avoid excess ripple output on a power supply feeding a heavy load, usually a.... -
The circuit even has a current limiting feature which is a more reliable system than most commercial units have. The circuit uses 3 pass transistors which must be heat sink. Resistor R9 allows the fine tuning of the voltage to exactly 13. 8 volts and the.... -
This 8V DC power supply was designed for use with an expensive piece of electronic equipment. It features full over-voltage protection as a precaution against regulator failure, either in the supply itself or inside the equipment it is powering. The circuit.... -
An increasing number of appliances draw a very small current from the power supply. If you need to design a mains powered device, you could generally choose between a linear and a switch-mode power supply. However, what if the appliance`s total power.... -
Its main feature is a selection of outputs at standard fixed voltages used in electronics. Because the outputs are fixed you do not have to worry if the voltage is correct, you just plug the wire in. It is quick and easy to use. You will probably still need.... -
This chapter contains circuit diagrams for several power supplies for pulsed solid state lasers. These include units suitable for driving the popular Hughes ruby and YAG rangefinder laser assemblies as well, one using the flash from a disposable pocket.... -
This circuit lets an external 12V SLA battery power a camcorder which normally has an inbuilt 7. 2V battery. Such batteries can now be very difficult or expensive to obtain for earlier model camcorders. In essence, the circuit is a standard LM317 adjustable.... -
In the example above a low voltage (12Vdc) is used to turn on a relay to switch on a 240V ac main circuit. Please note that there is no electrical connection inside the relay between the two circuits, the link is only magnetic and mechanical. If there is.... -
A low ripple regulated DC power supply designed based on transistors is shown here. Such transistor voltage regulators are suitable for application where high output current is required. Conventional integrated series regulators like 7805 can only deliver up....
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
The dc motor is used as a generator with the voltage output being proportional to its rpm. The...
Simple half-wave motor speed control is effective for use with small universal (ac/dc) motors....
A tricolor LED, acts as the visual indicator of the voltage level. The voltage to be measured is...
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Any NPN transistor can be used. The author used a 2N3904, but a 2N2222A should work just as well....
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As the main part of the circuit has been achieved Ic! Of bulk components are primarily large...
Circuit is shown. It consists of a temperature sensor, temperature control of electronic...
Circuit works The fluorescent lamp electronic ballast circuit by the rectifier filter circuit,...