Member of the Trade: WAVE High Fidelity
- Feb 5, 2017
- Leics, UK
I had been wondering how you were going to do it. I did some playing around with supercaps in a power supply last year and connecting them when they are fully discharged is a bit like shorting out the feed from the voltage rail. Expect exciting things to happen and probably magic smoke!. I did introduce an initial charge current limiter and also tried a switch to do the initial charge from a high current supply but ultimately I abandoned the super caps because of their higher noise and now use low noise caps instead.Ok this project stays on hold for a bit.
I did some measuring with a lab supply.. those caps take 30sec to charge on limited 1A.
I can't just place them directly over the power rails without controlled charging first. It would otherwise overload the regulators.
I must design a charge stage first.
Like its done in TT2 actually.
To be continued