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diode

  1. J

    Combined East and South facing panels impact using a bypass diode

    I am new to the forum so Hi to everyone out there! I am also a new DIY Solar PV user and I am looking for some technical advice on an unusual string configuration. So some prelude before the question: I have been looking at Solar on and off bust its always been too expensive and the FIT's keep...
  2. D

    Dynastart diode help needed please!

    Hi, I am new to the forum so firstly hello all. I have a basic understanding of auto electronics but have encountered a problem that is beyond me and need your help. I am retrofitting a dynostart (startermotor/generator) to a dumper engine that was previously hand-crank start. It is a Hitachi...
  3. D

    dumper dynostart wiring - finding correct diode-help required please!

    Hi, I am new to the forum so firstly hello all. I have a basic understanding of auto electronics but have encountered a problem that is beyond me and need your help. I am retrofitting a dynostart (startermotor/generator) to a dumper engine that was previously hand-crank start. It is a Hitachi...
  4. D

    Diode advice

    I currently have an intermittent issue with a disabled alarm system. The pullcord has a fault monitor connected across it in the form of a resistor and diode in series which I suspect is the culprit. The diode only reads continuity one way as expected but the resistance through it the correct...
  5. M

    Help With Diodes And Voltage Drop

    hi guys, im having a problem wiring some relays that need to be activated by 2 different signals, i try putting a diode on one of the signal wires so electricity wont flow thru the other signal wire, but now im having a huge voltage drop, and the relay is not activating by the wire that has the...
  6. M

    Is there a danger with relays without diodes

    I came across this LINK on Wikipedia the other day, since then I’ve done some googling and found out this is a known fact that if relay hasn’t got a diode fitted, this might/will cause a spike and might damage something on the Elise S1 circuit. I copy~pasted this form google "Since an...
  7. B

    HELP - Autosparks - Diode testing on Alternator Rectifier ??

    Hi All Got an old Combo Van with no output from alternator. Stripped it down and check rotor/fields and all OK. Desoldered rectifier from field and it has 6 diodes, put a fluke on them set to diode and have open circuit one way and .541 to .546 (with quick BEEP) the opposing way, presuming...
  8. G

    Flywheel Diode/Snubber Circuit For a DC Coil?

    Hi, I have a hydraulic valve with a two 24Vdc, 31W coils. How do you calculate the size of the diode to place across a coil to prevent voltage spikes or back EMF? Gerard
  9. G

    Sensor, Relay and back EMF - 24VDC??

    Hi, I am using an ifm sensor to detect a product coming down the line in our factory. I have connected this sensor in such a way as to energise a 24VDC Relay. No PLC involved here. It does the job perfectly and I am happy with it. Anyhow, I was just wondering if I should be using a surge...
  10. W

    Diode used with Relay

    Can anyone tell me what the result would be if a diode was put in the opposite way round in a bed light relay? (e.g. a bed head light for a hospital bed) In the correct terminals but the black stripe on the diode in the wrong way. And its in the extra low voltage side.
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