SSR01 input/output

[thommy]

I am reviving an old project and doing some rewiring. Nowhere on the SSR01 page can I find any mention of which connections are for power in and out! The schematic image is too low resolution to read anything and the downloads link just takes me to a Paypal site in Swedish which I cannot understand!

[thommy]

So i tried to work it out and got it wrong, shorted the output to ground. The BC556 at the output has melted so I replaced it and can measure the correct output voltage again but when connecting it to a load the led goes dim and the LM317 gets hot, is anything else likely to have failed?

Interestingly the bench psu also craps out when the regulator has a load on it, dropping from 18v to 4v.

So SSR01 without load is fine.

Bench psu powering load directly is fine.

SSR01 and bench psu not happy under load.