Series DC power supply

Posted on Mar 28, 2007

As can be seen, a power supply is usually the transformer, rectifier filter, adjust the yuan pieces, more zoom, six partial reference power supply and sampling, etc., there are

Click here to download the full size of the above Circuit.

some power supply overload or short circuit protection device. Circuit from 220V step-down transformer T to 10V, VD1 ~ VD4 bridge rectifier into a pulsating the AC 10V DC, through the capacitor c1 filter, and then by the regulation, amplification, sampling aspects, the adjustment tube VT2, the output DC Uo to 6V. Adjust the sampling resistor RP large small, you can change the output voltage U. 6V changes within the circuit output current Io is 200mA. It regulators working process is: when the output voltage changes, through a resistor divider to sample, after comparison with the reference power, amplification will amplify the error signal, to the base of the pole to adjust their regulator pressure drop in order to achieve a stable output voltage. Generally speaking, an enlarged part of the greater magnification, the higher the degree of stability. Let Control 12 - Stability turns 21a as shown in a block diagram of each power supply as follows: (1) the reference voltage of a reference voltage should be higher DC voltage stability, otherwise, since the reference voltage is changed, even if the U, not variable t It will cause the output voltage changes, affecting the stability of the output voltage. Currently. Often using a silicon reference voltage regulator vs Phoenix and achieved, as shown in Figure 12-21b, the key is to choose the regulator circuit current limiting resistor, the resistance should be guaranteed when the input voltage [ minimum flow through the regulator Parker tube current nor less than the minimum current to maintain stable voltages

Leave Comment

characters left:

New Circuits

Zero consumption Anti-theft High power Code Switch for E-Bike Batteries

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....
Ultrasonic distance finder circuit

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....
Simple Metal detector circuit with CD4030

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....
Fully automatic watering circuit for flower pots

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....
Simple deep searching metal detector circuit

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....
Sub-Harmonic Bass Converter for Electric Guitars

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,....
Echo Depth Sounding Sonar for Boats

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....
100W HiFi Audio Amplifier Circuit

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....
Plant-Pot Water Level Indicator Circuit

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.....

Create NOW your QR MENU for your Restaurant / Hotel / Bar / Caffe,

Comprehensive ordering/paying features. fully personalized to suit your Business.

Update Anytime! Easy and Simple!

Popular Circuits

Urban Sensing Networks using Arduino

Often government data sets available to us online are taken from major nearby metropolitan areas...

Automatic light dimmer circuit

This is an automatic light dimmer circuit. You do not need to dim the lights by yourself. It is...

555 timer touch activated alarm circuit

This is the circuit diagram of touch activated alarm system which still activated on load...

220 Volts Flashing Lamps

This circuit is intended as a reliable replacement to thermally-activated switches used for...

Using the Panasonic WM61A as a Measurement Microphone

Measurement microphones differ from recording microphones and sound meters-they have a flat...

HD44780 Character LCD Displays Tutorial

Interfacing with a HD44780 compatible display using some DIP switches and a few other components....

A circuit diagram of a switching power supply

12V voltage instability, you should first check the switching power supply output section, as...