Hobby Electronics Basics

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bicmos

Hello All I would like to enquire about the idea of bicmos and bcd. What are their main difference? Does it mean bicmos...
3 comments posted 20yrs
posted by cheanglong
3 comments posted 20yrs posted by cheanglong

Get shock from a standard transformer?

Hello. I see on many transformers (of home application like chargers, scanners etc.) that they're capable of delivering...
11 comments posted 20yrs
posted by arthurdent44
11 comments posted 20yrs posted by arthurdent44

Vref > Vin on comparator

Doing the ciruit suggested below, I was able to set 0.8 volts on the Vref. Currently my output is about 4.8 volts when...
2 comments posted 20yrs
posted by baskaran
2 comments posted 20yrs posted by baskaran

Voltage Divider - help with simple AC circuit

As you'll gather quickly enough, I'm a novice, and I would appreciate the guidance of someone experienced in electronic...
3 comments posted 20yrs
posted by keep
3 comments posted 20yrs posted by keep

How to detect transformer saturation?

Is there a way to detect when a switching power supply's isolation transformer is starting to saturate? I've read, in a...
4 comments posted 20yrs
posted by larrymoencurly
4 comments posted 20yrs posted by larrymoencurly

Capacitor Question

I have a voltage supply of 12-14.5 DC with a 7805 Regulator, what would be the capacitor values before and after the re...
41 comments posted 20yrs
posted by b.clarke
41 comments posted 20yrs posted by b.clarke

Solderless Connections to DC Motor?

I have a "GM3" DC gearmotor from www.hobbyengineering.com which has two metal tabs with holes in them for electrical co...
6 comments posted 20yrs
posted by redbrickhat
6 comments posted 20yrs posted by redbrickhat

Datasheets and pin ordering

I just blew a adj regulator cause in the data sheet the pins are orders reading left to right 1 3 2 ;/ WTF is that? 1 =...
17 comments posted 20yrs
posted by Abstract.Dissonance.hotmail.co
17 comments posted 20yrs posted by Abstract.Dissonance.hotmail.co

Need An AC-DC Converter

I think I have permanently lost the 5 V, 1.2 Amp plug-in power supply to an old (but still useful) Iomega Zip drive. Do...
7 comments posted 20yrs
posted by ryon
7 comments posted 20yrs posted by ryon

an old 27 Mhz transmitter - help!

Hi, Back in the late 70's or so, my late father made a remote which, when the antenna was pulled out and button pressed...
7 comments posted 20yrs
posted by aheyn
7 comments posted 20yrs posted by aheyn

transistors: so confusing!!

I am new to electronics - I have learnt heaps and am enjoying every new thing I'm learning. I did do Physics in school,...
29 comments posted 20yrs
posted by aheyn
29 comments posted 20yrs posted by aheyn

Design question

Hi, I have a solar panel here that I thought I could fiddle around with (being bored and all). What I want to do is fit...
33 comments posted 20yrs
posted by totalharmonicdistortion
33 comments posted 20yrs posted by totalharmonicdistortion

Piezoelectric Speakers

Hi all, Has anyone ever dealt with piezoelectric speakers? I was reading an article and it mentioned using Class D ampl...
3 comments posted 20yrs
posted by mr.whatever
3 comments posted 20yrs posted by mr.whatever

Electrolytic Cap's Leakage & Voltage Division

I recently read that the leakage current in an aluminum electrolytic capacitor will increase with higher applied voltge...
2 comments posted 20yrs
posted by KiwiXPlant
2 comments posted 20yrs posted by KiwiXPlant