diytube.com

Hello all,

From reading the posts, I know that some of you (Tom, Mike) have used something like an Amperite 6N030 to control a B+ delay circuit. I ordered some from AES because they're cheap ($4 each).

After hours of Googling around I couldn't find any spec sheets for these. Does anyone know if they're single pole or double pole and what their current ratings are? The link to Amperite shown on some of the older posts is broken.

If I can switch two B+ circuits at 400v 200ma from a single tube, great. If not, I can set up one or more relays with 12vdc coils and probably do the same thing, but would prefer to keep it as simple as possible.

Any comments? As always, thanks.

Chris

Hi Chris ...

I built my amp awhile back, and I did locate some good docs on
the relays somewhere on Amperite's site ... I can't find it now.

This is their suggested connection diagram ....



You don't want to leave the heater voltage applied to the
time delay tube ... it will burn out fast, and if there is a
power bump, it won't have time to cool down before it
slams the High Voltage back on. The circuit shown closes
a normal relay (mine happened to have a 6.3vac coil) and
disconnects the thermal tube. Works fine.

I wouldn't run high current or high voltage through the tube.

TomMcNally wrote:Hi Chris ...

I built my amp awhile back, and I did locate some good docs on
the relays somewhere on Amperite's site ... I can't find it now.

This is their suggested connection diagram ....

You don't want to leave the heater voltage applied to the
time delay tube ... it will burn out fast, and if there is a
power bump, it won't have time to cool down before it
slams the High Voltage back on. The circuit shown closes
a normal relay (mine happened to have a 6.3vac coil) and
disconnects the thermal tube. Works fine.

I wouldn't run high current or high voltage through the tube.

Very cool, thanks Tom!

So, as I see it, the delay tube closes a contact that supplies external coil voltage to a separate relay that handles the B+. Simultaneously, it cuts the 6.3 v heater to the tube, it cools off and it's ready for the next power cycle.

Dude, this is beautiful. Simple, reliable and low cost (under 10 bucks for tube and relay). Maybe I'll install a cap across each set of relay contacts to take out any potential noise and arcing.

Regards,

Chris

Thanks Tom

Here is the manufacturers page for the Amperite time delay relays...

http://www.amperite.com/assets/Documents/g.PDF

Mark

evsentry3 wrote:Here is the manufacturers page for the Amperite time delay relays...

http://www.amperite.com/assets/Documents/g.PDF

Mark

Hi Mark,

Thanks very much...really appreciate it.

Chris