New controller in place of the normal MFC

Mike_in_Wales

New elf
Joined
Dec 17, 2015
Messages
2
Hi,
I want to construct a new controller to replace the MFC which came with the light strings I am using - 500 leds. The lights run at mains voltage dc (directly after a bridge diode set).
The existing MFC has a couple of SCRs labelled PCR 406X. I can get these on ebay but they are quite expensive, around £7.00 each and I would need six of them.
Is there a cheaper equivalent I could use ?
Thanks,
Mike
 

David_AVD

Bite my shiny metal ass!
Community project designer
Generous elf
Joined
Jun 12, 2010
Messages
4,159
Location
Victoria Point (Brisbane)
That one looks to be similar to the 800mA 400V sensitive gate SCRs used in a lot of similar units.

Possible alternatives are BT169G and MCR100-6 (on eBay for about AUD $7 for 10 pieces).
 
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