The scope of this video is to make current transformers for soft switching inverters, in either Tesla coil, induction heaters or other inverter types using resonant switching. This video end article, should enable you to identify the correct construction according to your inverter design limitations. Key points appearing in the video. This post will not […]
Current Transformer (CT) Design and Construction Read More »
This is a teardown of a complete x-ray system, with control panel, x-ray head with high voltage transformer and collimator. The Philips Practix system is a mobile system, usually mounted on a trolley, with the x-ray head on a separate arm assembly. It has a large and small focus fixed anode X-ray tube, the maximum
Philips Practix 100 kV X-ray System Teardown Read More »
A guide on how to calculate gate drive transformer, how to wind gate drive transformers and test gate drive transformers. Gate drive transformers are also called GDT for short. The most important aspects is insuring low leakage inductance, no core saturation and having enough peak drive current available for your MOSFETs or IGBTs. This video
IGBT Gate Drive Transformer (GDT) Design, Construction and Test Read More »
I found a discarded ESAB TBH 140 welding machine in a scrap yard! It might be an older shielded metal arc welder, also known as SMAW or stick welder. But from what my father told me, these old ESAB machines are impossible to destroy. It got a good new home 🙂 I have also done
ESAB Bantam TBH 140 Welder Restoration Read More »
This Sedecal SHF-330, with HF meaning High Frequency, was originally a 37.5 kW x-ray high voltage generator. It later received an upgrade, to a Sedecal SHF-530, which is a 50 kW 500mA x-ray high voltage generator. This x-ray generator comes in 3 different versions. Line powered drawing all power directly from mains, 20-50 kW. Capacitor
50 kW Sedecal SHF-530 X-ray High Voltage Generator Inverter Teardown Read More »
I do a teardown and test of a Victron Energie Atlas Combi 12-800. It is a combined battery charger and 230VAC inverter. The battery charger of the Atlas Combi is suitable for a 230 VAC, (50 Hz) mains voltage. The charger works automatically, so batteries may remain permanently connected to the charger, even during winter
Victron Energie Atlas Combi 12V/800W Battery Charger/Inverter Teardown Read More »
Variable Isolation Transformer are different from a variable transformer, like a variac. Isolation from mains gives greater safety. Teardown of a variable transformer, which provides a variable voltage and isolation. Single phase 1x250V @ 3A.
Variable Isolation Transformer – Isolation, Day 30 Read More »
I give a short introduction to the differences between autotransformers, variable autotransformers and variable transformers. I show my collection of 7 variac transformer / variotransformer in the range from 1x260V @ 2A to 3x400V @ 25A along with a 3x400V 10kVA isolation transformer. 3x400V @ 13A Variac demonstration with data monitor: https://www.youtube.com/watch?v=PqeLLLZTBb8 You might wonder
Variac, Auto-, Vario- and Isolation Transformers – Isolation, Day 28 Read More »