Questions tagged [zvs]

Zero-Voltage Switch driver, a.k.a. Mazzilli oscillator

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Input and output power of ZVS not understood

I am trying to learn electronics and came across these ZVS drivers, which seem quite elementary. I understand what an inductor and a capacitor is (although obviously I don't know all the concepts). My ...
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40 views

Induction Oven mosfets overheating

I made this circuit inspired by this website: http://www.electroboom.com/ It seemed to work for a few seconds but the mosfets got really hot, they started to smoke and eventually one of them died. I ...
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164 views

Royer oscillator - frequency shifting in WPT

I am having a problem with my WPT resonant application. In my circuit modified Royer oscillator feeds LC tank. Receiver coil nearby is connected to rectifier and variable resistor. I know about ...
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261 views

Low or high side switching for ZVS Mazzilli induction circuit?

I'm trying to teach myself electrical engineering as a hobby and have been studying zero voltage switching induction heating circuits. I'm learning about electronics and designing a circuit as I go ...
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260 views

Trouble shooting ZVS driver

I've posted a few question on this forum about ZVF drivers and you all have been a big help and I'm hoping you can help me again. Forgive me if this is a bit long, I just want to be through.   Above ...
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1answer
438 views

How do I size a zener diode for use as a freewheel diode for a ZVS induction heater?

My electronics experience is "hobbyist" and I'm in some new territory with this question, so forgive me if this question turns out to have an easy answer or prove to be dumb. I have a basic ZVS ...
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0answers
122 views

Increasing output current from ZVS driver

I bought the ZVS driver as shown in the picture below: After connecting a flyback transformer, I tried measuring the voltage and current at the output. The open circuit voltage is about 12KV. To ...
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240 views

How to calculate inductance (ferrite core) in a induction heater [duplicate]

this is my third tag and I´m going to accurate my question, I have builded four induction heater and only one works, I´m sure that´s because of the inductor L1, I do not know how to obtain te correct ...
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1answer
89 views

About zero voltage switching boost converter designing [closed]

I am developing zero voltage switching in a boost converter for input 48 V and current is 20 Ah. Also: output power is 60 W, output voltage is 200 V, output maximum current is 0....
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1answer
664 views

How to control power output from a ZVS driver?

I am trying to carry out heat treatment of Steel cylinders. I want to set up my own heat treatment apparatus. I am using the popular ZVS (Zero Volt Switching) driver for this. I bought this device. ...
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2answers
958 views

ZVS driver charging capacitor bank

I built this ZVS driver to make some big high voltage sparks a while ago. It worked off three voltages 24V, 50V, and 80V and had no issues. The only part of it that got really hot were the 1kohm 3W ...
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1answer
725 views

High Voltage ZVS Driver

I built my first ZVS driver a while ago and had some fun making big arcs before I blew up the mosfets trying to make some alterations for induction heating. When it comes to this stuff I dont know ...
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98 views

ZVS troubleshooting waveform

I have been running various different ZVS based flybacks for all kinds of uses (jacobs ladders, SSTCs, etc.), however, for some reason, I am now getting mosfet heating, which was never apparent before ...
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2k views

ZVS LC Frequency

I recently bought an ZVS driver from AliExpress.com It's about this model.L1 and L2 Choke are each 93μH,C1 and C2 are 0.33 μF each.I want to determine the operating frequency of the device.On the ...
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1answer
416 views

What could be causing ZVS imbalance?

I am using a ZVS driver to test some properties of induction and power transfer. I have never PREVIOUSLY had a problem with MOSFET heating in my designs. Today I changed one coil for another larger ...
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1answer
5k views

Current Output for ZVS Flyback Transformer

What is the typical current output for high voltage of ZVS flyback transformer or how to properly measure it? Update with the schematic, the fly-back transformer is typical one used in old CRT TV;
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1answer
396 views

mazzilli zvs both igbt failure

I try to build mazzili zvs with 2 IGBT toshiba MG75Q2YS40 75A 1200v. For the each fast diode, I use 2 pieces DSEC60-06 A 600v 30A in series to get 1200v. for this, I use 2 power source: 12 volt for ...
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2answers
4k views

ZVS Driver - Why does so much current need to flow through the diodes?

Here is a diagram for a simple ZVS driver: So as the voltage one side of the LC circuit goes up, it pulls down the gate of the MOSFET on the opposite side, through the diode (D3 and D4). The current ...
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2answers
9k views

What is the meaning of zero voltage switching (ZVS) and zero current switching (ZCS)?

I was reading about induction heating circuits in a electronics textbook and saw the terms ZVS and ZCS which are abbreviation ...
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776 views

How to use a ZVS voltage booster to create the Jacob's ladder?

How to use this ZVS voltage booster to create the Jacob's ladder? I bought it from the internet (eBay): Description: This is the design of a flyback foreigner drive circuit for ...
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4answers
3k views

What is a flyback?

Trying to find this answer is so difficult that I can't even tell whether What is the difference between a transformer and a coupled inductor? is asking the same thing. Some reading suggests that a "...
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1answer
5k views

ZVS Driver design and initialization

I'm fascinated by zero voltage switching (ZVS) drivers. So I've been playing with simulations of them in Falstad. Two things I don't understand: How is the oscillation initiated in an actual ZVS? ...
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1answer
1k views

Voltage spikes with ZVS full bridge

I am designing a DC/DC converter. I chose the fullbridge topology. The requirements are as follows: Vin = 75 - 125 Vdc Vout = 200V P = 600W Fs = 100 Khz The basic schematic is as follows: I use ...
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1answer
6k views

ZVS induction heater MOSFET failure?

I'm an electrical engineering student and I've been super excited to put a zvs induction heater together. I finally got all my parts, turned it on, and smoked a MOSFET almost instantly. Happened ...
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2answers
3k views

Would the FCA47N60F work for a ZVS flyback driver?

I have built a few flyback drivers from 555 controlled to the ZVS. I always have one problem, the power transistors keep burning out. For the ZVS driver, I used the IRFP250 and keep having the problem ...
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2answers
2k views

Troubleshooting ZVS flyback failure

I built a ZVS flyback driver a couple months ago, and it worked great and amazed people with the arcs it managed to create. I used 2 IRFP250 MOSFETs and the results were great. One day I was wanting ...
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2answers
5k views

Getting Right parts and building ZVS flyback correctly

I recently built a 555 timer flyback driver. I used 2 IRFP450 MOSFET's in parallel to drive it and I got pretty good arcs. Something always seemed to fail, and I always was buying another 555 chip or ...
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1answer
5k views

P-channel MOSFET ZVS Flyback Driver

I want to make a ZVS flyback driver, but all the sites say to use 2 n-channel MOSFETs and I only have one powerful n-channel MOSFET. I have a bunch of p-channel MOSFETs, specifically, 2 of powerful ...