Andrew Borg
Member
Hi guys I have a drill brand name 'casals' that stopped working. When I opened it found a type of diode with switch that was burned. Would like to know what this diode was so I can change it.
Thanks.
Thanks.
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Hi Alec thanks for response. Could not see markings on this but looks very much like a diode. This is exacltly with the low/high speed switch.Drill model?
Any decipherable markings on the failed component?
Any good sharp close-up pics?
Mains operated version.Cordless or mains operated version?
Max.
That most likely is a Universal (brushed) motor, I have never seen a diode on any of these before, be interesting to know the function of the diode in this case, are you sure it is in fact a diode?Mains operated version.
Don't know exactly if is a diode cause it's broken in two but looks like a diode.That most likely is a Universal (brushed) motor, I have never seen a diode on any of these before, be interesting to know the function of the diode in this case, are you sure it is in fact a diode?
Max.
Yes this may be one cause to correct myself drill is still working but on high speed mode only.Some devices that appear to be diodes are TVS Transient Voltage Suppression diodes, they are in fact two back to back.
Max.
Hi Max no this has no variable speed just two speeds hi lowIf this is a variable speed drill the Universal type use a 'Dimmer' style control for this, there must be a little more electonics in there?
Max.
Perhaps the 'diode' is indeed a diode, either bypassed or providing half-wave rectification for a universal motor according to the speed selector position.
My misuse's hair dryer goes from full wave rectification to half wave for the fan motor to go from max speed to half speed.If it is a real cheapo it could be using the diode to run the motor on half-wave rectified mains voltage.
You seem to misuse those the same way I doMy misuse's hair dryer goes from full wave rectification to half wave for the fan motor to go from max speed to half speed.
spec
Yes, drying paint on car/electronic equipment, drying PCBs, drying adhesives, heating components to check for faults...You seem to misuse those the same way I do