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40 amp Power Supply ?

Hi techs , I want to build a 40 amp power supply to use for amateur radio . I want to use a transformer out of a batter...
2 comments posted 21yrs
posted by rijo1
2 comments posted 21yrs posted by rijo1

Pump question

Recently opened up a 120v,60hz Coffee machine, and the pump has a large diode in series with one of its 120v input lead...
2 comments posted 21yrs
posted by ksleep
2 comments posted 21yrs posted by ksleep

European appliances in N.A.

I'm trying to determine if it is possible to import a European induction cooktop (hob in U.K. terminology) to the U.S....
9 comments posted 21yrs
posted by colin_young
9 comments posted 21yrs posted by colin_young

Soldering to battery terminals?

I've attempted modding my Crest Spinbrush with a wall-adapter power supply. I quickly realized that solder does not sti...
2 comments posted 21yrs
posted by marycoy4
2 comments posted 21yrs posted by marycoy4

HP 2 nm crossbar latch

HP labs Palo Alto announces complete crossbar latch in 2 nanometers: http://glikglik.com/2005/02/crossbar-latch.html
1 comments posted 21yrs
posted by sawlake-gg
1 comments posted 21yrs posted by sawlake-gg

Digital dimmer: Triac vs MOSFET in a circuit?

Digital dimmer: Triac vs MOSFET in a circuit? I want to dim a 120Volt-60Watt light with a digital controller. I already...
19 comments posted 21yrs
posted by Robijean
19 comments posted 21yrs posted by Robijean

Servo Pulse to voltage converter.. Mini SSC II

I have a motor that requires a control voltage between 0-5V.. Ov=stop and 5V=full speed. I'm using Mini SSC IIa and nee...
2 comments posted 21yrs
posted by jonspam
2 comments posted 21yrs posted by jonspam

PID Control Primer, $17. Companion Software $11

For a booklet on PID control without the math refer to web page http://members.aol.com/pidcontrol/. It describes the Se...
0 comments posted 21yrs
posted by dwstclair
0 comments posted 21yrs posted by dwstclair

electronics swap meet

held once a month on last saturday of every month 7am to 11:30am.free admission.free parking.restrooms.food concession...
1 comments posted 21yrs
posted by webberdog
1 comments posted 21yrs posted by webberdog

Active HIGH / Active LOW

Hi, There chips with the mixture of Active HIGH and Active LOW signals. Is there any pros and cons of each levels? OR it...
4 comments posted 21yrs
posted by muthusnv
4 comments posted 21yrs posted by muthusnv

Multiple VDD and GND in a Chip

Hi, Why the large memory chips has multiple VDD and GND pins? I hope the VDD and GND are connected together while conne...
2 comments posted 21yrs
posted by muthusnv
2 comments posted 21yrs posted by muthusnv

Good URL on VCRs?

Hi, My memory is playing tricks on me. I'm sure I read in a VCR manual that its resolution was 312.5 lines (I'm in UK s...
1 comments posted 21yrs
posted by mreeves
1 comments posted 21yrs posted by mreeves

Adapter: USB to 3.5mm plug Available?

I have a Logitech 300 USB headset/mic combo. It plugs into a USB port on my computer. Is there an adapter available tha...
2 comments posted 21yrs
posted by Bob4579
2 comments posted 21yrs posted by Bob4579

power adapter question

Hi, I have a device whose power requirements are listed as following: 12.6W, 2.1 A @ 6 VDC I have a power adapter which...
3 comments posted 21yrs
posted by igorschein
3 comments posted 21yrs posted by igorschein