Nothing In Particular

[izzy wizzy]

Our mice are few and far between and only in the garden, so far. Hedgehogs (2) and bastard squirrels prolific.

Quandary.

Hedgehogs were something we encouraged in our UK garden. Here they are a pest that we trap for. Hard to make the transition. They're bloody huge as well.

[andrew Ivimey]

This is a hedgehog...

[Dave the bass]

I'm reading Geddy Lee's book, 'My effin' life'.

The word 'shoddy' comes up, his Dad worked for a while in a shoddy mill he says.

I know we've covered this before, he gives a description of the word and says "Shoddy was inferior material spun from waste woolen cloth and used for stuffing inexpensive furniture ".

But still...

Pfffttttt, shoddy!

[simon]

I'm having a moment and can't convince myself I'm correct. With a traditional centre tapped mains transformer intended for full wave rectification, if the whole of the secondary is used with bridge rectification the current capacity of the secondary should be halved (compared to full wave CT) because all the secondary is being used all the time. Right?

[Max N]

Does this help?
https://www.sowter.co.uk/rectifier-tran ... lation.php

[simon]

Not really, but thanks Max. It's permissible Iac of the secondary that's eluding me - I think it's half the rating because the full winding is in use all the time with bridge rectification, whereas each half winding is on then off then on again etc. so full current rating for full wave rectification. Though it's probably not quite that simple.

[Nick]

So from the link Max gave

FULL WAVE: Iac = Idc

BRIDGE: Iac = Idc x 1.61

So from that I would say that the rating of a transformer rated for full wave should be de-rated by 62% (1 / 1.61 = 0.62 )