brake before make? RS 317-651 - diyAudio
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Old 23rd October 2012, 08:09 PM   #1
diyAudio Member
Join Date: Dec 2003
Location: Randers, Denmark
Default brake before make? RS 317-651

I have MiniDSP/MiniDIGI/MiniAMP (one of the first versions, before seperate pins for volume)
I have just bought a nice old turntable (Sony TT-2250) and need to switch between analog and digital input. I know I need a brake before make switch.

I have a couple of RS 317-651 switches. Good quality but I don't know if they are brake before make. How do I find out?

FTN7904 RS | DPDT on-on silver contact toggle switch | 317-651 | Welcome to RS Online
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Old 23rd October 2012, 11:18 PM   #2
diyAudio Member
Join Date: Nov 2008
Toggle switches, by mechanical design, are break-before make

You should not use them in low-level audio circuitry. Togglers are preassure type contacts, you need a self-cleaning, wiper type contact, as found in a slide switches. E
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Old 24th October 2012, 06:35 AM   #3
diyAudio Member
Join Date: Dec 2003
Location: Randers, Denmark
Why are they not good for low-level? They have been used as switches in a pre-amp for at least 25 years. It was not made by me, but a audio engineer/technician.
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