Muller Dynamo for experimentalists

[Jdo300]

If I were you, I would just make a rectifier out of discrete diodes. Schottky diodes are the best choice since they have a lower forward voltage drop (0.4V-0.6V depending on the current). Here's an example:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MBR1100RLGOSCT-ND

- Jason O

[tanakat]

If I were you, I would just make a rectifier out of discrete diodes. Schottky diodes are the best choice since they have a lower forward voltage drop (0.4V-0.6V depending on the current). Here's an example:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MBR1100RLGOSCT-ND
- Jason O

Just for the record, Romero said he had no such luck with Schottky diodes, and another guy gave some potential explaination for that

[wings]

Just for the record, Romero said he had no such luck with Schottky diodes, and another guy gave some potential explaination for that

I do not know what your friend told you.
my opinion is that in order to start the avalanche do not have to stop quickly.
i.e. you need a bit more voltage delay - non linearity.

[tanakat]

I do not know what your friend told you.
my opinion is that in order to start the avalanche do not have to stop quickly.
i.e. you need a bit more voltage delay - non linearity.

I was just reporting what RomeroUK said about the schottky diodes, actually.

[nul-points]

Just for the record, Romero said he had no such luck with Schottky diodes, and another guy gave some potential explaination for that

hi all

Romero's comment about not finding that his Schottkys were beneficial shouldn't stop us from considering their use

not all Schottky diodes have low forward volts drop (some are 0.8V or more) and also the volts drop increases to some extent with forward current

so it's important to check the specification first to see if the particular component is going to be suitable


for example, i've bought some IXYS manufactured parts: DSSK 38-0025B  which have 0.48V Vf  at 20A (so Vf will be a bit less than 0.48V at say 2 or 3A) - the diodes are paired in one case (common cathode), so i only need three parts to make one FWBR (3 parts contain 6 diodes - two diodes will be unused)

(NB  my particular diodes only have a 25V reverse voltage rating but my system is using a 3V DC motor drive, so i don't need the same headroom as required on a system using 12V drive)


hope this helps
np


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