Hobby Electronics Basics

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Dialer problem with a picchip

Hello, I have a recuring problem when connecting my circuit to the phone line. basically the circuit I use is : http://...
32 comments posted 18yrs
posted by lerameur
32 comments posted 18yrs posted by lerameur

Does anybody know why this would oscillate (LDO)?

Does anybody know why this would oscillate? Schematic 5.1V LDO 2Ma - 15Ma http://i36.tinypic.com/fk78ub.png According t...
9 comments posted 18yrs
posted by spamme
9 comments posted 18yrs posted by spamme

PIC's and USB

I downloaded some stuff on how to use USB from: http://pe.ece.olin.edu/ece/projects.html I want to make a PIC act as an...
1 comments posted 18yrs
posted by randy.day
1 comments posted 18yrs posted by randy.day

PIC - Recommendation for a first time user

Thank you everyone for your input to my earlier thread for my need of a one chip solution that directed my application...
7 comments posted 18yrs
posted by christopher
7 comments posted 18yrs posted by christopher

Comprehensive List of Farm Electrification Ideas

1. The Super Irrigator a. The Super Pivot: tractor wheels powered by an electic motor slide radially and rotate the piv...
1 comments posted 18yrs
posted by BretCahill
1 comments posted 18yrs posted by BretCahill

Problem with this circuit

I've found this circuit: gnd------voltage source-----current source------resistor----gnd all sources are ideal I shoud...
1 comments posted 18yrs
posted by silusilusilu
1 comments posted 18yrs posted by silusilusilu

Sound operated light source

I am learning morse code. There are software available which convert any text into morse and give the output to the hea...
5 comments posted 18yrs
posted by mnitin73
5 comments posted 18yrs posted by mnitin73

Dual Trace Sound Card Scope

SndScopePro 1.5 Dual Trace Sound Card Scope Professional Dual Trace Oscilloscope AC DC Triggered Input Single / Dual ch...
2 comments posted 18yrs
posted by eb3354
2 comments posted 18yrs posted by eb3354

Inverter improvements?

Hello, I have an inverter circuit, although I learn that hooking a load directly to its output is not working. I was no...
7 comments posted 18yrs
posted by lerameur
7 comments posted 18yrs posted by lerameur

water level relay

I thought this would be easy, but I'm struggling with the details. I have some lights (12VDC 200W) I want to turn on wh...
10 comments posted 18yrs
posted by dave
10 comments posted 18yrs posted by dave

Building Your Own Flyback Transformer

A friend gave me a little yellow toroid (ferrite?) with a winding around it, that he had butchered from some non-workin...
40 comments posted 18yrs
posted by mrdarrett
40 comments posted 18yrs posted by mrdarrett

Compact Fluorescent Lamp

When you turn the CFL on, It will take about 40 sec brighten fully , which make it very inconvenient to use. Can any mem...
49 comments posted 18yrs
posted by mowhoong
49 comments posted 18yrs posted by mowhoong

Constructing a "delay" into a system?

OK I can solder, and 50 years ago took an RCA Electronics course so I could fix b&w TV's. Since then, not too much elec...
4 comments posted 18yrs
posted by rich99sue
4 comments posted 18yrs posted by rich99sue

Scope dilema

I am looking to purchase my first oscilloscope use from eBay. I have seen many recommendations for the Tektronix 465 se...
6 comments posted 18yrs
posted by Sticks_7
6 comments posted 18yrs posted by Sticks_7

PIC16F88 swaping bit status in PORTB

Hello every one! I have a microcontroler PIC16F88. I want to make some simple applications with it, but for some applic...
3 comments posted 18yrs
posted by toss321
3 comments posted 18yrs posted by toss321