voltage | Page 5

voltage

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  1. Z

    AC / DC voltage drops across Diode

    I am unable to find voltage drop of normal silicon diode(0.7v) on Voltmeters during Proteus Simulation. Also we consider 0.7v drop of diode equivalent to DC Source of 0.7v but DC voltmeter is not showing any output and AC Voltmeter shows around 5 volts drop across diode instead of 0.7V.Kindly...
  2. Z

    Zener Clipper Output Voltage is AC or DC?

    I designed basic clipper circuit using single 3.3v Zener.When i simulate this on proteus and while checking output by keeping knob on AC of respective chanel and output shown is 2v positive and 2v negative from refrence ground(obviously wrong).When i change knob to DC it shows correct output of...
  3. tank

    Frequency without voltage

    Could anyone shed some light on what might be going on here, before I cut a trap in the laminate to find out. I have a dead socket on the end of a 2.5mm cable of unknown origin. L-E L-N N-E all 0 volts. Insulation resistance between the ends all 1000M Ohm. No continuity any conductor back...
  4. antigua finedining

    Ring vs Radial for minimum voltage fluctuations

    I'm building a new property consisting of 4 sperate discrete buildings, all roughly in a straight line. My question: Is there any advantage to connecting the buildings supply in a ring rather than just daisy-chaining them (i.e. radial)? I was planning to run a single 1 AWG backbone supply up...
  5. Y

    12V voltage drop dual battery camper installation

    Hi there I can't wrap my head around a problem I have when trying to connect my dual 12v battery system in a camper. When I plugged in my VSR ( Orion from the brand Victron) i measured the + input was 3 volts although engine running (and app saying 14v input...). I thought the wire were too...
  6. N

    Voltage issue with led lights

    Hi Problem: I have 5 (240v) led lights in a bedroom on a single on/off switch (not dimmer) and all the leds worked fine until last w/end. Then with the switch being off, the leds would flicker/strobe. Switch on and they all work fine. Disconnected the switch completely and still the same...
  7. Nclleeon

    Live voltage at crank

    Hi everyone, I have a Vauxhall insignia 2.0 cdti non starter, cranks but no start. It also doesn’t crank very fast, tried new battery and still the same, it cranks kind of sluggish and the dash lights start to flicker, live voltage readings at crank drop from 12v to 7v, does that mean the...
  8. S

    Voltage Conversion from 120v to 220v

    Hi Gents, We will convert our shop voltage from 120v to 220v.We will replace the old transformer 75KVA-480v (208/120 V) by new one (400/230 V). The question is can I use the existed panel boards (see the information below) or not? see pic links please https://ibb.co/X3zqFqC...
  9. W

    Strange voltage when using dimmer switch

    Wondering if anyone else has had this, getting 24v between live and neutral at pendant when dimmer is off, which means the light isn’t fully going off it’s still sort of glowing. When I replaced this for a regular switch it sorted the issue, just wondering if anyone else has had this and if just...
  10. L

    Voltage on high res. extraneous part

    During an FLI test recently on a high resistance extraneous part (several thousand ohm) I decided to test what voltage appeared on the metal while the test was been carried out.I used a Metrel M1 3000.I measured approx 40 volt. Its well over 20 years since I conducted a similar test and my...
  11. Rockingit

    Voltage to boiler fan 'drops out under load'

    Just had a call from an M&E client of mine and good mate asking to pick my brains.... large 3ph biomass boiler with (I assume variable speed) 1ph fans internally. Says he's got 230v L-N/E on the connecting plug but when the fan gets connected there's nothing on the internal fan connections...
  12. J

    Uneven voltage on legs at main panel - troubleshooting?

    I have two main panels each 150amp breaker. House was built in 83 and lived here for 6 years no issues. About 6 months ago we had a power surge and our main ac fail (hard short) and tripped the breaker. Had the unit replaced but it seems since then we have had issues with lights diming and...
  13. K

    Is it safe or proper to run 10mm ECC cable with a voltage of 240v in chunking?

    Is it safe or proper to run 10mm ECC cable with a voltage of 240v in chunking?
  14. K

    Why voltage is not increasing more than 2K in Megger MIT1525 Insulation tester?

    Hi Sir, I'm having a Megger MIT 1525 15KV insulation tester. During testing test voltage is not increasing more than 2KV. these is no physical damaged to the equipment. what could be the reason? pls advise. thank you...
  15. G

    2010 Ford Taurus SHO - Low 5V Reference Circuit low voltage was fixed but back

    I could really use some guidance as I'm at my witts end... I have a 2010 Ford Taurus SHO with a low 5V Reference Signal (P0642). I first had this issue a couple months ago. I ruled out the three sensors on this circuit as I still had <1V with all sensors unplugged. I changed the computer but...
  16. J

    Voltage tester question

    If you used a voltage tester to touch L-E does it allow the 230V to actually flow to earth or does it use a smarter means of calculating voltage without requiring a current to pass? In theory, could you damage a connected item downstream?
  17. T

    Power transformer Low voltage supply

    I recently installed a 200kva, 33/0.400 KV transformer for a small commercial hostel, so after powering the transformer, we checked all the output of the 3 phase at the secondary side and it was ok but whenever a single air conditioner is powered , then the voltage becomes low. Please guide me...
  18. Jackalope

    Chaining extension cords with low voltage devices

    I know there is a risk of chaining extension cords and everyone recommends against it. But I've also read all extension cords should be temporary and not used for more than 90 days - if you want something permanent you needs to install electrical receptacles (outlets). I know a lot of people use...
  19. Dartlec

    Voltage on fittings in bathroom

    One of the oddest jobs I've ever had today. Called by a plumber I know who had attended after a leak through the kitchen ceiling from bathroom above - and got a shock from the bathroom tap (and his 'pen glowed on everything') Turned up to check and, sure enough, voltage of 16V AC showing on the...
  20. Anthony Deakin

    Line carrying voltage, neutral no voltage

    Hi all, I have been trying to work out why all the up stair sockets have voltage coming into the line but none of the neutrals. The ring is on a 16amp mcb. Any ideas why? Thank you in advance

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