• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Filament Transformer

Status
Not open for further replies.

kbbarau

New Member
I want to know how a Filament transformer differs from a conventional one and the basics things to consider when designing an ideal filament transformer.
 

Nigel Goodwin

Super Moderator
Most Helpful Member
kbbarau said:
I want to know how a Filament transformer differs from a conventional one and the basics things to consider when designing an ideal filament transformer.
Presumably you mean for the filament heater in a valve/tube?.

I don't see that they vary at all?, except they tend to be unusual voltages (6.3V is the most common), and of course they normally have a constant load - so you should design it to give the correct voltage under the load it's designed for.

But to be honest, the slight variations caused by using it with 2 valves or 5 valves, isn't going to make a great deal of difference to the voltage.

If I was building something today, I'd most probably just order a standard 6V transformer to feed the heaters.

You might also consider feeding them using DC?, you could regulate it then, and it would help to reduce mains hum in an audio amplifier.
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top