Hobby Electronics Basics

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Stepper motor help please

Greetings All, I have a setup where I'm using Allegro P/N 5804B (http://www.allegromicro.com/datafile/archive/5804.pdft...
1 comments posted 19yrs
posted by etpm
1 comments posted 19yrs posted by etpm

Need Ideas for addressable register IC

I need some help. After several years retired and many more years away from cobbling together TTL and field programmabl...
3 comments posted 19yrs
posted by ko6no
3 comments posted 19yrs posted by ko6no

Ul standard

hello, I have a small battery charger unit. In theback there is a logo ; UL in a circle. I found on google that it is a...
3 comments posted 19yrs
posted by lerameur
3 comments posted 19yrs posted by lerameur

Hooking up panel amp meter

I've been asked to order parts for a panel amp meter (with an upper-limit alarm relay). They've specified to use a curr...
3 comments posted 19yrs
posted by none
3 comments posted 19yrs posted by none

Impedance Matching Help!

Hello, I am fairly new to electronics and need some advice regarding impedance matching. I wish to impendance match a h...
1 comments posted 19yrs
posted by p.i
1 comments posted 19yrs posted by p.i

signal generator circuit

I'd like to make a circuit that is essentially a signal generator producing a 400 kHz signal. I think this can be done...
12 comments posted 19yrs
posted by bob
12 comments posted 19yrs posted by bob

Density of States

I was reading up on the density of states and i hit on a snag... I dint understand how they take the "volume" of the de...
3 comments posted 19yrs
posted by strider014
3 comments posted 19yrs posted by strider014

need help interpreting DC readings

Hey all; I'm trying to isolate sources of DC from my guitar effects pedalboard so I've cracked open a few of the pedals...
2 comments posted 19yrs
posted by toccata
2 comments posted 19yrs posted by toccata

Discussion

Hi Excuse me Please. help me. I want to know about basic processing unit inside a computer. Andthen, tell me how do I le...
4 comments posted 19yrs
posted by kyawsanyu
4 comments posted 19yrs posted by kyawsanyu

ultrasonic distance measurement using 89c51

Hey folks! I am set out to build an ultrasonic distance measurement module using 89c51. The range I hav in my mind is a...
14 comments posted 19yrs
posted by chaudhari.chetan
14 comments posted 19yrs posted by chaudhari.chetan

pic problem

noob qusetion. ive programmed a 16f84 and 16f628a to flash an led. they both flash in the programmer/experimentor.when...
4 comments posted 19yrs
posted by echarala
4 comments posted 19yrs posted by echarala

Bipolar power in the field?

Is there a clever way to create a +-12V bipolar supply for the field? It will be powering op amps on a PCB. Could I use...
13 comments posted 19yrs
posted by cprstn54
13 comments posted 19yrs posted by cprstn54

Why is a phone circuit plugged into 115 Volts

I just bought a house in Vallejo, California and found a telephone wire in one room leading to a plug that is plugged in...
10 comments posted 19yrs
posted by searoom1
10 comments posted 19yrs posted by searoom1

microcontroller store

I was wondering if any of the big brick and mortar stores in the U.S. sell microcontrollers and boards. I want to start...
2 comments posted 19yrs
posted by bob
2 comments posted 19yrs posted by bob

Energy Bands

Hi....We did energy bands in class a few weeks ago...i should say that i am clueless to a certain extent.... I have no...
3 comments posted 19yrs
posted by strider014
3 comments posted 19yrs posted by strider014