Electronic load

Have you tried a toaster, toaster oven, etc?

TTman Inscribed thus:

just remember it is pretty much a dead short until it heats up

-Lasse

Give me your mailing address and I will send you two 10R 250W resistors. Small heat sink may be needed. Cheers, Harry

Heathkit used to sell a load for use with transmitters. If I recall correctly it was about ten 2 watt resistors suspended in a gallon of oil.

Dan

Thanks, but it's for a company... they can pay...

I'd oversize it a bit and use 5 200Watt resistors. For a similar load I used this heatsink:

You may expect the load to be present for 1 minute but in reality it may need to run longer.

Otherwise look for an electronic load from Array and use two 300W units in parallel.

Five 100 watt or larger resistors are fine for a 1 minute test. whats the duty Cycle? A Muffin fan blowing across the resistors helps a lot.

Cheers

"TTman"

Makes a big difference to what load is suitable.

.... Phil

In that case, here ya go...

watch the wrap

Real Engineers use these Vishay power resistors...

Plus they are not expensive and very robust. Dont forget to order the hardware for mounting.

Cheers

But they are wimpy at only 200W. Just like engineers, maybe. Get the

It was a 50 Ohm, 200 W non inductive carbide resistor, and the product was their famous 'Cantenna'. The ham magazines showed DIY versions built with whatever surplus resistors you could cobble together.

He was canceled a decade ago, because he could no longer buy insurance.

Most toaster and toaster ovens are in the 1000W region and use a bang-bang temperature controller...

Check out the Vishay-Sfernice LPS300 range. 300W per unit up to 85C/ Rth case-heatsink 0.112C per watt.

A couple of 10 ohm ones, in series, bolted to a really big heatsink, should do 500W, 100V, fine.

Farnell should have them in the UK.

Read the datasheet, and do what it says...

light bulbs