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Forum Index : Electronics : petrol gen wiring

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Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 01:17am 04 Sep 2018
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Cheers,  Tony.
 
Chopperp

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Joined: 03/01/2018
Location: Australia
Posts: 1057
Posted: 12:59pm 16 Sep 2018
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Cleaver used of a couple of standard bridge rectifiers.
I do sort of "hate" having a set of diodes not used though .
But it is a good cheap & convenient way, if you do want to use just a couple of diode, to use part a bridge .
ChopperP
 
Boppa
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Joined: 08/11/2016
Location: Australia
Posts: 814
Posted: 08:22am 17 Sep 2018
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I often use parts of a bridge rectifiers in cars, specifically the ones with spade terminals and a central hole for mounting- simply because they can be wired into circuits without needing any soldering

Very useful for alarms, lighting circuits etc etc

Have even used just a single diode in the bridge, just because of those spade mount terminals and mounting provisions (also used a cable restraint u clip on a standard diode and choccy block terminals)- but thats not as neat as the bridge rectifiers visually
 
Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 08:57am 17 Sep 2018
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Agree Boppa.
They are cheap, readily available, have high voltage and current ratings and can be bolted direct to a heatsink and remain fully isolated with good thermal contact.
Cheers,  Tony.
 
Boppa
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Joined: 08/11/2016
Location: Australia
Posts: 814
Posted: 09:57am 17 Sep 2018
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I rarely have bothered with heatsinking them, its just handy that a self drilling tech screw can fit in the mounting hole, so mounting to a bit of metal somewhere under the dash/in the footwell is dead easy
I first started using them for classic cars that didnt have reverse lights and the owners wanted to retain the original classic looks- as long as I could get a reverse signal somehow (microswitch on the linkages or gear shifter often) I would use the old 'both back blinkers as reverse lights' trick that was common in 70's cars- plus by using a couple of bridge rectifiers at the rear blinkers, it could be restored to factory condition easily if required (ie some car shows frowned on non standard lighting and lost you points, but the owners who wanted to use them as daily drivers disliked the danger a lack of reverse lights posed say in a car park...
 
Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 06:18pm 17 Sep 2018
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Just screwing them down onto the sheetmetal would likely provide enough heat sinking for a few amps. Certainly enough for many typical automotive uses.

Cheers,  Tony.
 
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