J
Jag Man
- Jan 1, 1970
- 0
(You really need to start bottom posting. Thats the convention here, and
it makes it easier for everybody to read the replies)
I noticed that, but to me it's a nuisance to have to skip down through
several pages of
history to see what's new. But, when in Rome...
Are you talking about microfarad or millifarad caps? mF = millifarad
which is 1000x uF.
I was using m for Micro, having no "mu" on my keyboard. I do know the
difference.
With larger resistors and smaller caps, there is far less charge and
thus current when it discharges. This causes less problems like the one
you were seeing. However, there is a limit, which is that at some point,
the leakage through the 555 may cause errors, leading up to it not
working at all.
The best advice I can give you is to read the datasheet. They understand
their device, and can give you advice based on their testing and
theoretical knowledge. Learning how to read datasheets is the best thing
you can do to learn how to use any chip.
Guess the problem I have there is translating what I read there into
something actionable.
In this case, which datasheet limit should I use to set resistances for
acceptable current?
I know that my main problem is the transistor was still new technology and
the IC was
still 15 years away when I took my circuits class... IOW, I'm and interloper
here! Thanks
for your patience.
Anyway, my little box seems to be working well enough to use now, so maybe
wait a while
before going back and changing all those resistors and caps. I shouldn't
have been in such a hurry
to pick up the soldering iron.
and
Ed