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 »
A teardown of a desktop “PRO” UPS, the APC Back-UPS PRO 1500, a run down of the controller and power electronics of the system. I also compare it to the APC Smart-UPS 1500 VA, that I did a teardown of, some months ago. APC Smart-UPS 1500 vs. APC Back-UPS PRO 1500 A comparison is not
APC Back-UPS Pro 1500 VA Teardown Read More »
A teardown of a huge (2 full size 19″ racks) UPS system, the APC SmartUPS VT 40 kVA, a run down of the controller and power electronics of the system. If you like real big UPS systems, you are in luck! I have also done teardowns of the following systems. Teardown of a Eaton PowerWare
Teardown of a APC SmartUPS VT 40 kVA Read More »
A teardown of a desktop UPS, the APC Smart-UPS 1500, a run down of the controller and power electronics of the system. Data on the unit (which is currently replaced by a newer unit with same model number “APC Smart-UPS SMT1500IC”): https://www.apc.com/shop/dk/en/products/APC-Smart-UPS-Line-Interactive-1500VA-Tower-230V-8x-IEC-C13-outlets-SmartConnect-Port-SmartSlot-AVR-LCD/P-SMT1500IC If you want to see more UPS teardown videos, pictures and articles, I
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A teardown of a 19″ 1U server UPS, the APC Smart UPS 450 model SC450RMI1U. I give a quick run down of the current paths in the system and evaluation of the overall design. For many more UPS teardown articles and videos, I hope you will find these articles worth your time! Specifications for APC
APC Smart UPS 450 VA, for Server 19″ Rack 1U, Teardown Read More »
A look at a bag of IGBTs and MOSFETs that I quickly salvaged from industrial electronics. Found in induction cookers, solar inverters, welding machines, car and battery charges. It can also be other common high power electronics with switching inverters. Discussion of salvaging IGBTs/MOSFETs: https://highvoltageforum.net/index.php?topic=2117.0 These TO-247 IGBTs can be used in a DRSSTC Tesla
A look at a box of IGBTs and MOSFETs that I have salvaged from household electronics like microwave ovens, induction stoves, solar inverters, welding machines, car and battery charges and other common high power electronics with switching inverters. The TO-247 IGBTs can be used in a DRSSTC Tesla Coil using the free half- and full-bridge
Where To Get “Free” TO-247 IGBTs and MOSFETs Read More »
This is a short teardown of the smallest UPS I have yet found thrown out. The Belkin Regulator PRO Silver UPS 650VA (model F6C650-SER-SB) uses the battery type CSB HC1221W which has been discontinued. If not obvious, my daughter helped me make this video 🙂 Belkin UPS specifications UPS / surge protector 4 power outlets
Belkin Regulator PRO Silver 650VA UPS Teardown Read More »