I am sorry to say, I've spent much more time in management than I ever did in electronic design, the degree I earned at my university. So, I'm looking for a very simple circuit I can use to turn on the tube amplifier I designed using a powerlink signal. I am doing this to help tie my two loves - tubes and B&O together. This way I can use a Beomaster to drive a nice pair of passive speakers using my tube amp. Anyone have a simple circuit I can use to turn on a relay? Otherwise, I'll break out my design manuals and have a go.
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Simple powerlink start circuit
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In my files area are pics of what I built. It's unsafe junk, but drove a Carver M400 cube from a BeoCenter 2500 for years. [Edit: deleted]
B&O used to make an auxillary box to do this,although it wasn't designed for Powerlink,and needed 12v to trigger it,whereas the Powerlink trigger is 5v.
I think Steve at Sound's Heavenly does something for this purpose though,as often Beoworlder's want to drive an auxillary power amp.
Send him a message explaining what you need?
Nick
Hi DMacri
B&O used to make an auxillary box to do this,although it wasn't designed for Powerlink,and needed 12v to trigger it,whereas the Powerlink trigger is 5v.
This was the box - they still come up on eBay occasionally: link
.. and mine worked fine with a Powerlink 5v trigger, supplied by the RJ45 socket of a Playmaker to turn on a BM900 as its amp!
A couple of alternatives:
- This trigger circuit design is posted in the Beotech section of this site: link
- You could possibly use one of these with the Beomaster in the 'master' socket and the valve amp connected to one of the 'slaves':
Location: Warwickshire, UK
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Here's a remote switch for sale in the US:
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This is exactly what I needed. I can use the tube heater circuit for the power source. Thanks.- This trigger circuit design is posted in the Beotech section of this site: https://www.beoworld.org/beotech/circuit.htm
Hi DMacri,
It sounds like you have a few options there. Please let me know if you need something to be built and I can sort this out for you.
Kind regards, Steve.
Location: The cable workshop, England
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