RIFA is now Kemet. The range is SMR 100V. PPS is a very low distortion dielectric. Bateman has measured it in his epic series in Wireless World. It is a non polarized dielectric with a very low temperature coefficient. It is a Polycarbonate substitute.
The only thing where Polypropylene is better is lower dielectric apsorbtion but we do not have a sample and hold circuit here.
The only thing where Polypropylene is better is lower dielectric apsorbtion but we do not have a sample and hold circuit here.
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Never tried this type of construction.... seems quite difficult to visualize the sch this way
How about this way? http://www.rfcafe.com/references/electrical/images/Bob-Pease-Breadboard.jpg
That looks really weird but it works well nevertheless. I remember that we had a black and white TV with tubes. Sometimes men in blue suits came and changed some tubes. That where the days of raw and thunder.
I am happy to report that i got the latest version working. In fact i found 2 diodes that where burned. The 1N4148 I used to unload the low ESR 1000uF caps where simply too weak to survive. I am using now UF4007 and that works. The sound I get is very similar then before, so is the noise. At this moments I would say that both versions are very close in performance but I need a bit more time to confirm this judgement.
I am happy to report that i got the latest version working. In fact i found 2 diodes that where burned. The 1N4148 I used to unload the low ESR 1000uF caps where simply too weak to survive. I am using now UF4007 and that works. The sound I get is very similar then before, so is the noise. At this moments I would say that both versions are very close in performance but I need a bit more time to confirm this judgement.
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