Power Supply Protection - Printable Version

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+--- Thread: Power Supply Protection (/showthread.php?tid=2036)

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Power Supply Protection - BAracer - 18th-Mar-21

One of the outcomes of my recent adventures with learning how to wire up my controller and track in a 'positive wiring/common ground' configuration was that I burnt out two Fusion 101 power supplies. These good, but basic, PS to not have any accessible fused protection so once I caused 'the whistle of death' from each one, they became unusable.

Is there a way of introducing an inline fuse into the wiring circuit to provide accessible protection to the Power Supply? Anybody doing this, and do you have a preferred product?

It is an 8A, 13.8v, unit, so as I only run one RTR type car at a time on my track, I was thinking maybe a 5A fuse?

This is the wiring circuit: -

[attachment=13471]

Any advice welcome...

Thank you

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RE: Power Supply Protection - woodcote - 18th-Mar-21

I always put a 5A quick blow fuse between the +ve power terminal and the controller.

Here's a holder and quick blow fuse ready to go into a driver station I'm building...

[attachment=13472]

There are plenty of places to buy electronic components, but I do like bitsbox.

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RE: Power Supply Protection - Scuderia_Turini - 18th-Mar-21

Hello Jeremy,
The easiest place to locate the fuse will be at the output of the power supply, in-line with the positive terminal. You can buy pre-wired fuse holders on Ebay.

Leo

Linky to an example of fuse-holders on Ebay - https://www.ebay.co.uk/itm/Type-Fuse-Glass-Holder-5-x-20mm-Inline-AGC-Fuse-Screw-Quick-Blow-With-22AWG-Wire/124325517134?hash=item1cf260d74e:g:UIsAAOSwQPdfUzDw

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RE: Power Supply Protection - BAracer - 19th-Mar-21

Have now bought both the DIY and pre-made options.

Once bitten...

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RE: Power Supply Protection - BAracer - 19th-Mar-21

And less than 24hrs after ordering, a pack of bits from bitsbox was delivered by our friendly postie.

[attachment=13502]

I might just add the banana plugs and sockets to the inline fuses still to arrive from eBay.

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RE: Power Supply Protection - BAracer - 22nd-Mar-21

Any idea how I connect this wire to this banana plug?

[attachment=13579]

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RE: Power Supply Protection - woodcote - 22nd-Mar-21

If there's no screw/bolt to screw down and trap the wire, then solder it. Flux and tin the cavity on the plug - you'll need a hot iron and plenty of solder - tin the wire and then solder together.

I prefer to solder banana plugs

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RE: Power Supply Protection - BAracer - 22nd-Mar-21

Done!

[attachment=13580]

Thank you.

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RE: Power Supply Protection - BAracer - 22nd-Mar-21

[attachment=13581]

By the third one, it was almost as if i knew what I was doing.

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