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  1. Minder

    By how much will a 26 Ohm resistance reduce 0.28A?

    The resistance of the fan = 43Ω so 43Ω in series with 26Ω = 69Ω which across 12v will = .17Ma. I leave it to you to calculate how many volt drop is across each of the 43Ω & 26Ω. Again, you need to brush up or understand Ohms law. M.
  2. Minder

    Fan Header Question: Volts, Amps & Watts Multiplication & Multiple fans...

    Here we just get the Aurora Borealis to view in winter!:cool: .M.
  3. Minder

    Fan Header Question: Volts, Amps & Watts Multiplication & Multiple fans...

    Obviously not a Monty Python fan!!:p M.
  4. Minder

    Adding "on" light to 240V thermostat

    Are you sure there is high voltage AC on the thermostat? Usually low voltage, and Neon's that are made for appliance indicator have a minimum strike voltage. M.
  5. Minder

    Fan Header Question: Volts, Amps & Watts Multiplication & Multiple fans...

    In any case room #12 is an Argument.:rolleyes: M.
  6. Minder

    Fan Header Question: Volts, Amps & Watts Multiplication & Multiple fans...

    What you need to do is forget about the fans, study up on Ohms law and the relationship between Volts, amps, wattage first. There are some basic deficiencies in your thinking, 20 posts later all have been trying to explain it to you. M.
  7. Minder

    Fan Header Question: Volts, Amps & Watts Multiplication & Multiple fans...

    Basically Yes, You can use as many that does not exceed the current rating of the circuit. M.
  8. Minder

    Fan Header Question: Volts, Amps & Watts Multiplication & Multiple fans...

    Wattage is a result of Voltage and Current and as already been posted, two fans in parallel double the wattage. Across 12v they will each see no difference in performance. M.
  9. Minder

    Fan Header Question: Volts, Amps & Watts Multiplication & Multiple fans...

    The common PC fan header should be able to support that current, modern PC fans are now mostly BLDC as opposed to the old brushed DC, these usually exhibit a fixed RPM range across a variation in voltage, and the current is fairly constant, as opposed to the old DC type, these have a BLDC IC...
  10. Minder

    Gotta love chinese sites

    Cheap 'cause its upside down.:p M.
  11. Minder

    Newbie question about transformer inputs

    If Very hot to the touch after switch on, the resultant current was probably limited to the winding resistance, i.e. Saturation. M.
  12. Minder

    Newbie question about transformer inputs

    I don't see any mention of Va size anywhere? M.
  13. Minder

    Newbie question about transformer inputs

    As you can see from the diagram in #11, if the 277 touches ground it is connected in anti parallel, Opposing the main winding, when the L & N is connected as shown. M.
  14. Minder

    Newbie question about transformer inputs

    If you want to learn what is going on, connect the L & N leave the 277 unconnected and measure the AC from N to 277 , you should see 277vac, if not reverse the N & L1 and re-measure. M.
  15. Minder

    Newbie question about transformer inputs

    But it depends on if they are in phase with the applied 120v, the connection could well have amounted to anti-parallel! Even in phase, one will oppose the other to a lesser degree. M.
  16. Minder

    Newbie question about transformer inputs

    So if the 277 was grounded then it would depend on how the L & N were connected (in or out of phase with the 277) as to how much current flowed to ground in the 277 overwind, either way it would be excessive and if left as it were would most likely have burnt the primary out. It probabally was...
  17. Minder

    Most common failure survey.

    Old tube stuff mostly capacitors, in reviving antique car radios, its a given to replace all the caps regardless, the non-electrolytic were mainly wax paper. M.
  18. Minder

    What component is this?

    You also may come across the same with R, e.g. 4R7 = 4.7 ohms, 47R = 47 ohms. M.
  19. Minder

    Single phase to three phase motor

    Do they show FLA (full load amps) on the plate? M.
  20. Minder

    Burned disk cap need specs...?

    100nf 600v Trust me..:rolleyes: M.
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