Hobby Electronics Basics

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transfer function in small-signal mosfet model

hi all I have some difficult in finding the transfer function between input and output of this circuit.. http://www.theb...
0 comments posted 19yrs
posted by bassi.matteo
0 comments posted 19yrs posted by bassi.matteo

Hall Effect Sensors

Hi, I'd like to interface Hall Effect sensor to a uC and have picked out the A1301EUA-T (datasheet: http://www.allegrom...
8 comments posted 19yrs
posted by QmQiQcQhQaQeQlQhQiQmQsQ
8 comments posted 19yrs posted by QmQiQcQhQaQeQlQhQiQmQsQ

switch capacitor simulator

HI I want to implement my RC design into a switch capacitor design (SC). I am using Pspice Orcad 10.5, I dont think thi...
1 comments posted 19yrs
posted by lerameur
1 comments posted 19yrs posted by lerameur

twin T circuit

Hello, I would liek to knwo if someone has the equations for a Twin tee RC active filter. I am doing the circuit from a...
13 comments posted 19yrs
posted by lerameur
13 comments posted 19yrs posted by lerameur

television: philips magnavox tr2503 c121

We own a philips magnavox tr2503 c121 television. It was in a common room used by the public. All of a sudden it starte...
3 comments posted 19yrs
posted by eileenfp
3 comments posted 19yrs posted by eileenfp

PCB UV Box - Follow Up

Hello, First off, thank you to every one of you for answering the other thread. It's given me plenty to research and pe...
28 comments posted 19yrs
posted by ,shfskfjsf
28 comments posted 19yrs posted by ,shfskfjsf

interfacing with pci

Hi I'm using 8 boards in parrallel mode and I want to transfer the row data from each board to PC for analizing and for...
1 comments posted 19yrs
posted by shuyavivi
1 comments posted 19yrs posted by shuyavivi

Adding switch to device

I added a switch to a velleman pcs500(amazing that they didn't add one but I should have known better) because for some...
1 comments posted 19yrs
posted by Jon_Slaughter
1 comments posted 19yrs posted by Jon_Slaughter

Help needed for 5 button selector circuit

I have a bank of 5 DPDT momentary push button switches like the kind used for preset frequencies on a car radio. I need...
5 comments posted 19yrs
posted by gashmore
5 comments posted 19yrs posted by gashmore

Is it safe to parallel PIC chip outputs

For more output current drive, can I parallel the outputs of a PIC chip port? Assume the pins are all on the same port...
10 comments posted 19yrs
posted by meld_das
10 comments posted 19yrs posted by meld_das

Question about Modelling the ESR of a Capacitor

Hi Guys, under: http://www.avxcorp.com/docs/techinfo/eqtant.pdf you can find some basics about the 'ESR' of a Capacitor...
3 comments posted 19yrs
posted by news4k
3 comments posted 19yrs posted by news4k

Replacing a Battery for a Brinkman Solar Light

I think the 6v battery is dead, 6v made by Eagle Picher, Carefree. The voltage measure 0.5. Do these rechargeable batter...
7 comments posted 19yrs
posted by wolf_tracks
7 comments posted 19yrs posted by wolf_tracks

Binary to Braille

Hello to all, Im having trouble building a binary to braille circuit using only decoders. I think I have the right func...
4 comments posted 19yrs
posted by wop100
4 comments posted 19yrs posted by wop100

Building a UV PCB exposure box?

Hello, Ideas please? A small professional UV box with two 8W tubes will cost about £100, and is, professionally made an...
28 comments posted 19yrs
posted by ,shfskfjsf
28 comments posted 19yrs posted by ,shfskfjsf