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Glowing Bits! · 26th Apr 2019, 10:16 pm

Paul, am I correct in thinking the new pedals work like a modern light dimmer?
If so, that's the reason for the suppressor failing, modern dimmer type contraptions don't put out 50 Hz all the time, only on full power or off, the said component is expecting 50 Hz, not something heading towards 1 kHz and beyond.
It does seem unusual to have the suppressor in the machine itself, it's usually an elcap (or any other brand) fitted across the pedal terminals.
Don't worry Paul, I changed it to an x type before 'that' cap did anything untoward.
Take note, it says 'that' cap, I treat all PIO's as grid decouplers, replace on sight, preventative maintenance I suppose.

26th Apr 2019, 10:16 pm	#14
Glowing Bits! Octode Join Date: Oct 2011 Location: Wrexham, North Wales, UK. Posts: 1,457	Re: Vintage sewing machine suppressor help! Paul, am I correct in thinking the new pedals work like a modern light dimmer? If so, that's the reason for the suppressor failing, modern dimmer type contraptions don't put out 50 Hz all the time, only on full power or off, the said component is expecting 50 Hz, not something heading towards 1 kHz and beyond. It does seem unusual to have the suppressor in the machine itself, it's usually an elcap (or any other brand) fitted across the pedal terminals. Don't worry Paul, I changed it to an x type before 'that' cap did anything untoward. Take note, it says 'that' cap, I treat all PIO's as grid decouplers, replace on sight, preventative maintenance I suppose. __________________ Rick, the annoying object roaming the forum.