UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Mullard 3-3 voltages query

Diabolical Artificer · 14th Apr 2021, 6:37 am

My dummy loads are bog standard 2r 50w ali panel mount resistors in series, any inductance they have is tiny and will only effect very HF readings. There's probably more stray inductance in the amp, wires going to dummy load etc, and loads of stray capacitance. I think non inductive dummy loads are a red herring, if it effects test results it's insignificant. Unless your testing amps at 10mhz can't see it'd make a difference.

There's more good info about square wave testing on Rod Elliots site.

Andy.

14th Apr 2021, 6:37 am	#31
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,669	Re: Mullard 3-3 voltages query My dummy loads are bog standard 2r 50w ali panel mount resistors in series, any inductance they have is tiny and will only effect very HF readings. There's probably more stray inductance in the amp, wires going to dummy load etc, and loads of stray capacitance. I think non inductive dummy loads are a red herring, if it effects test results it's insignificant. Unless your testing amps at 10mhz can't see it'd make a difference. There's more good info about square wave testing on Rod Elliots site. Andy. __________________ Curiosity hasn't killed this cat...so far.