Filtering the ripple off a 180V bias line. Impossible? No, PSoCable! | Cypress Semiconductor
Filtering the ripple off a 180V bias line. Impossible? No, PSoCable!
Here's a great way to use a couple of spare PSoC3 op-amps to do something I bet you thought you couldn't do: reduce the ripple level on a 180V bias voltage (or indeed, any voltage you want, + or -) by a cool 60dB. So, not only is PSoC3 useful as a supervisor in solid-state power amps, but you can do some great stuff in tube amps as well!
Oh, and for another trick to help reduce the size of low-frequency gain rolloff caps in compact audio circuits, see my article in Linear Audio (www.linearaudio.net ; you actually have to pay money for it and get a paper version, how retro! But well worth it.)
Keep on filtering!