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In this episode, I take an APC battery backup and modify it to have 3 direct DC output jacks as well as an LED display with voltage readout. This gives me a power supply for my HAM radio as well as many other useful capabilities during a power outage. Visit me on Facebook https://www.facebook.com/the8bitguy
Dear friends, Please support us at Patreon, so that we can continue our free educational service https://www.patreon.com/LearnEngineering The invention of transistors revolutionized human civilization like no other technology. This video demonstrates working of a Bipolar Junction Transistor (BJT) with it's practical applications such as transistor as an amplifier and as a switch with help of animation. Along with transistor working of diode is also explained in the video. The video covers following topics - structure of Silicon atom, doping, N type doping, P type doping, working of Diode, working of NPN transistor and dual stage amplification. Like us on FB : https://www.facebook.com/LearnEngineering Voice-over artist : https://www.fiverr.com/mikepaine
Megger OTS80PB Oil Test Set Repairs by Dynamics Circuit (S) Pte. Ltd. Megger’s automatic laboratory oil test sets perform accurate breakdown voltage tests on mineral, ester and silicon insulating liquids. Moulded test vessels give repeatable results with lock in precision electrode gap setting adjustment wheels. The transparent, shielded lid and large test chamber enable easy access to the test vessel Megger appointed Dynamics Circuit (S) Pte. Ltd. as their service center for South East Asia and have been trained in all Megger various locations including. Comprehensively trained engineers will perform all the services. We have you covered locally. • Dover, UK [Megger] • Valley Forge, Pennsylvania, USA [formerly AVO, Biddle] • Danderyd, Sweden [formerly Programma] • Baunach, Germany [formerly sebaKMT] Dynamics Circuit (S) Pte. Ltd. is certified ISO 9001:2015 and Accredited IEC 17025 LAB serves with total confidence. Talk to us, The Experts! Dynamics Circuit (S) Pte. Ltd. 15 Yishun Industrial Street 1, #09-28 Win 5, Singapore 768091. Contact: (+65) 6754 7024 Email: [email protected] www.dynamicscircuit.com
How to use an N channel MOSFET (a type of transistor) to turn anything on and off! Also, remember to put a 100k resistor between gate and ground if you want your FET to stay off by default. IRFZ44 MOSFETs on Amazon: http://www.amazon.com/exec/obidos/ASIN/B00CFEVJ7M/afromods-20 Main tutorial webpage: http://www.afrotechmods.com
UPS failed while I was checking the batteries after the vendor finished battery maintenance. This was my last walk-through of the day. I checked the battery voltage and current at the UPS panel, inspected each battery for signs of leakage or post swelling. I was going to print a battery report when I noticed the battery monitor printer was near the end of the paper. I looked for a new roll of paper and just as I closed the door, the UPS failed releasing a fireball into the room. The failure tripped one of the three 3000 AMP main feeders, the battery breaker and the UPS input breaker. My first concern was all the smoke even though the fire sensors in this room are heat detecters. By the time I got the door open to vent the smoke and add light to the room, my phone was blowing up with alarms. Though I was quite busy for the next few hours, none of the computers in the center were affected. I learned that the failure in the UPS was a phase-to-phase short on the input 480 VAC circuit, apparently through the diodes or SCRs in the input AC side.
Advice UPS SMB 650 Repairs by Dynamics Circuit (S) Pte. Ltd.
Protect your computers, servers, routers, networking devices with the Advice UPS SMB 650. This UPS provides a backup battery power in the event of a power outage, monitoring and safeguarding your equipment from harmful power conditions, spikes and surges.
Dynamics Circuit (S) Pte. Ltd. offers comprehensive repair services. Our professional team is highly trained and experienced in dealing with all technical issues associated with UPS units and systems. Dynamics Circuit (S) Pte. Ltd. service department provides all of its clients with fast, professional, reliable and courteous service.
Talk to Us, The Expert!
Dynamics Circuit (S) Pte. Ltd.
15 Yishun Industrial Street 1, #09-28 Win 5,
Contact: (+65) 6754 7024
Email: [email protected]