EPSON PHOTO 830U printer power circuit It shows EPSON PHOT0 830U printer power supply circuit, which belongs to the switching power supply. In normal operation, the power suppl
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y input socket will 2,20V AC supply circuit board. After 220V AC fed through the first fuse and mutual inductance filter. After a 220V AC, filtered and fed by a bridge rectifier circuit composed of four rectifier diodes, the 220V AC into a DC voltage of about 300 V, and then supplied to both ends of the electrolytic capacitor CI1. The electrolytic capacitor voltage is 400 V, which is mainly used for 30V DC voltage filtering. After a filter, a DC voltage of 30V Panther gave switching transformer Tl, opening off the transformer Tl and the other end connected to the drain of the switching transistor VT1. 30V DC voltage via the starting resistor R18 after switching to a field effect transistor gate should provide starting voltage. This voltage is applied to the gate field effect transistor switch after which they begin to have a current flows in the primary winding current will be switching transformer. In the switching transformer, there is a positive feedback winding, an electric current is immediately generates a sensing signal such that the switching FET into oscillation, after the oscillation is generated in the primary winding of the transformer in the switching of the high frequency oscillating current, will produce the corresponding secondary induced current frequency. Switching transformer secondary output voltage through the rectifier filter, the output lead two DC output voltage and to the main circuit board.
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.....
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