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Left amp on standby all night.


Stevenexp

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On standby the tubes are only seeing heater voltage.

Heater burnout is pretty much unheard of, so no worries.


A little tid-bit of tube history:

There were vacuum tube radio manufacturers who

offered radios with an "instant on" circuit.

What this did was keep the tube heaters running

at all times. The high voltage circuit was rectified

with selenium diodes so it would start instantly

when you hit the power switch.

Consumers were amazed
:lol:

 

That's pretty cool.

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On standby the tubes are only seeing heater voltage.

Heater burnout is pretty much unheard of, so no worries.


A little tid-bit of tube history:

There were vacuum tube radio manufacturers who

offered radios with an "instant on" circuit.

What this did was keep the tube heaters running

at all times. The high voltage circuit was rectified

with selenium diodes so it would start instantly

when you hit the power switch.

Consumers were amazed

 

 

TV's had them. My Dad bought his Sears tv cuz it had instant start. The dog used to lay under the console since it was always warm.

 

More tv's had the afterglow problem with the fast start circuits.

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TV's had them. My Dad bought his Sears tv cuz it had instant start. The dog used to lay under the console since it was always warm.


More tv's had the afterglow problem with the fast start circuits.

 

 

power bill?

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My third 5150 spent almost an entire year on standby, except when I was playing it, or if I had to take it somewhere. I don't know if it was just a fluke, but that set of tubes lasted much longer than any other set I've had in a 5150. Someone told me that it reduces wear on the tubes, and I wanted to try it, and it seemed to work for me.

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