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Frequency calibration of Hameg oscilloscope

Hello all, I have a Hameg HM203-5 oscilloscope which seems to be 8% off in frequency. Anyone knows if there is a way to...
1 comments posted 22yrs
posted by noNOspamSP
1 comments posted 22yrs posted by noNOspamSP

strange behavior of laptop during thunderstorm

I was using a laptop a few weeks ago during a thunderstorm. I knew about the storm and was running the laptop on batter...
20 comments posted 22yrs
posted by ara
20 comments posted 22yrs posted by ara

satellite dishes

I'd like to read about satellite dishes as devices in their own right, rather than from the standpoint of their applica...
2 comments posted 22yrs
posted by ara
2 comments posted 22yrs posted by ara

CMOS buffer hysteresis?

Hi all-- I'm building a drivetrain for an autonomous robot, and I bought a photointerrupter to use as part of a homebre...
2 comments posted 22yrs
posted by mehaase
2 comments posted 22yrs posted by mehaase

101 things to do with a dead hard disk....

Hi group. With all the computers being scrapped, there must be literally thousands of useless HDD's dumped every week i...
15 comments posted 22yrs
posted by testing_h
15 comments posted 22yrs posted by testing_h

Apple laptop battery recall- Important

http://story.news.yahoo.com/news?tmpl=story&ncid=738&e=1&u=/nm/20040819/tc_nm/tech_apple_recall_dc Eeeek.. -A "Bother" s...
0 comments posted 22yrs
posted by testing_h
0 comments posted 22yrs posted by testing_h

Rotary Stepping Relays

Does anyone know of a source for rotary stepping relays? AKA Step relays, sequencing relays, Strowger relays. I need se...
3 comments posted 22yrs
posted by news
3 comments posted 22yrs posted by news

Recommend a switching regulator?

Hey all-- I have a 12V SLA battery that I am using to power a microcontroller. Can anybody recommend a good switching r...
1 comments posted 22yrs
posted by mehaase
1 comments posted 22yrs posted by mehaase

OT: The Real Jim Thompson

There's been lots of controversy about what I really look like, so I decided that I should post a picture of myself.......
33 comments posted 22yrs
posted by thegreatone
33 comments posted 22yrs posted by thegreatone

Multiple power supplies from 12V dc source

I have to provide a power module taking a 12V source to produce the following voltages and currents: 5V +/- 10% @ 300mA...
5 comments posted 22yrs
posted by Fred
5 comments posted 22yrs posted by Fred

Cheapest way to learning/experimenting FPGA

I'm new to FPGA and would like to learn how to program/use FPGA in cost effective way. What would be your recommendation...
18 comments posted 22yrs
posted by <fpga>
18 comments posted 22yrs posted by <fpga>

9V Battery Current

I posted a message a week back but never received the answer I was looking for. I have an electromagnet hooked-up to a...
33 comments posted 22yrs
posted by chad.waldman
33 comments posted 22yrs posted by chad.waldman

Inverter blew a fuse!!

I was using my new emachines M6811 laptop, which has an A/C adapter with a "90W" blue sticker on the end of it, with a...
10 comments posted 22yrs
posted by jon
10 comments posted 22yrs posted by jon