Lamp Limiter versus 0-30V Power Supply - UK Vintage Radio Repair and Restoration Discussion Forum

BrianAllen · 27th Oct 2020, 5:00 pm

Should I be thinking about purchasing a transformer/power supply or is the lamp limiter that I made perfectly adequate?

Cobaltblue · 27th Oct 2020, 5:50 pm

Hi Brian

Did you mean 0-30V or 0-300V?

If you are working on Domestic Radios usually a lamp limiter is enough as long as you do some basic checks.

On older (Pre-war sets) I sometimes use a Lamp limiter and Variac.

A 30V DC power supply is always handy and second hand can be a bit of a bargain.

Lamp limiter is cheap and easy but bear in mind it offers protection against catastrophic failure due to shorts rather than excess current due to dodgy caps

Cheers

Mike T

BrianAllen · 27th Oct 2020, 5:56 pm

Hi Mike,

I was just looking back over a previous post "tools/equipment that couldn't live without" and may have misread 30V for 300V.

Given your aforementioned, I think I will stick with the lamp limiter until we can all get out to the auctions etc once again.

Thanks Mike,

Regards,

Brian

27th Oct 2020, 5:00 pm	#1
BrianAllen Heptode Join Date: Nov 2018 Location: Staffordshire Moorlands, UK. Posts: 595	Lamp Limiter versus 0-30V Power Supply Should I be thinking about purchasing a transformer/power supply or is the lamp limiter that I made perfectly adequate?

27th Oct 2020, 5:50 pm	#2
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,863	Re: Lamp Limiter versus 0-30V Power Supply Hi Brian Did you mean 0-30V or 0-300V? If you are working on Domestic Radios usually a lamp limiter is enough as long as you do some basic checks. On older (Pre-war sets) I sometimes use a Lamp limiter and Variac. A 30V DC power supply is always handy and second hand can be a bit of a bargain. Lamp limiter is cheap and easy but bear in mind it offers protection against catastrophic failure due to shorts rather than excess current due to dodgy caps Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk

27th Oct 2020, 5:56 pm	#3
BrianAllen Heptode Join Date: Nov 2018 Location: Staffordshire Moorlands, UK. Posts: 595	Re: Lamp Limiter versus 0-30V Power Supply Hi Mike, I was just looking back over a previous post "tools/equipment that couldn't live without" and may have misread 30V for 300V. Given your aforementioned, I think I will stick with the lamp limiter until we can all get out to the auctions etc once again. Thanks Mike, Regards, Brian