Heigh Voltage Generator using Microcontroller

By IKTech June 30, 2017

To drive little neon lights or comparative gadgets in your microcontroller/automated tasks, you require a high-voltage dc control supply for steady and quick execution. This circuit enables you to make an extremely basic dc-dc support (venture up) converter for broadly useful applications that require a high-voltage for legitimate operation. The circuit utilizes promptly accessible parts which can be purchased from any hardware segments store.

Creator’s Prototype

The circuit is composed around a standout amongst the most well-known ICs in the universe—the 555 clock chip. The 555 (IC1) is arranged as an astable oscillator (AMV) which sways at a recurrence (around 68KHz) controlled by the estimations of parts R1,R2,and C1. IC1’s yield specifically drives a sort STP55NF0 high-control mosfet (T1), that switches the current through a 10uH/200mA inductor (L1). The “ultra-quick recuperation” sort diode and “high-voltage” sort capacitor blend (D1 and C4) outlines a proficient yield rectifier and channel circuit,while R3-C3 frames a snubber system for T1.

All things considered, there is very little to say in regards to the development, simply get the parts in their suitable spots and the correct route around on a bit of perfboard. When you have checked your work, you would then be able to give the completed unit a pre-flight test. Simply associate a 5-6 volt dc source to the information terminal piece (J1). Next take your multimeter and check the “crude” yield voltage accessible at the yield terminal piece (J2). It could be anyplace in 30-90 volt dc extend. When you get the high voltage yield, you can trim it for true applications, by including a discretionary straightforward zener diode – based shunt controller hardware as shown in the circuit graph. Note that the last yield voltage will change a bit with associated stack, yet it ought not swing by more than a couple of volts from 0 to 10mA load.

Cautioning: This circuit, while not as perilous as mains control, still gives enough vitality to potential assault a man should they be associated between the high voltage yield and ground in the correct way. So be extremely cautious when taking a shot at this circuit!

Circuit outline

 

The Shunt Regulator Maths

Expect that the crude yield voltage is 50V, and what you really searching for is 1mA at 27V. At that point you should utilize a 27v zener diode as ZD, and ascertain the estimation of arrangement resistor/stabilizer resistor (RS) utilizing the equation RS = Vin-Vreqd/Ireqd (here for this situation, it is 50v-27v/1mA).

At long last note that, this is an essential plan thought for hardware specialists. Intrigued perusers can adjust the circuit by changing the working recurrence of the 555 IC, or potentially modifying the estimations of yield segments like the inductor,mosfet,rectifier,and channel capacitor,etc. to get fancied outcomes!

26 thoughts on “Heigh Voltage Generator using Microcontroller

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