Hobby Electronics Basics

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help reading a datasheet

Hi, I am looking at digikey web site the IRFZ44 TO-220AB, there are many chips available. I am a bit confuse concerning...
20 comments posted 18yrs
posted by lerameur
20 comments posted 18yrs posted by lerameur

DC motor speed control

hi This is muralidhar.i am planing to create an electrical bike for that i am planing to use a dc motor (12V) but i don...
7 comments posted 18yrs
posted by admin.murli
7 comments posted 18yrs posted by admin.murli

"The Public Record Is Your Friend"

If you are saintly like me then the public record is your friend. On the other hand, if you are a delusional liar, then...
18 comments posted 18yrs
posted by BretCahill
18 comments posted 18yrs posted by BretCahill

Simple Battery Tester?

Does anyone know if someone makes a cheap battery tester that simply holds the battery, puts a light load on it and assu...
2 comments posted 18yrs
posted by jimsTAKEOUTnews2
2 comments posted 18yrs posted by jimsTAKEOUTnews2

Sign of Genius

"When a true genius appears in the world, you may know him by this sign, that the dunces are all in confederacy against...
109 comments posted 18yrs
posted by BretCahill
109 comments posted 18yrs posted by BretCahill

relay switching speed

hello, I am trying to figure out is there is any rating on the maximum switching speed on mechanical relays such as the...
10 comments posted 18yrs
posted by lerameur
10 comments posted 18yrs posted by lerameur

which group for NIR video capture discussion?

Hello, I am playing around with a bullet camera which grabs video in daylight and in darkness. In darkness it uses NIR...
2 comments posted 18yrs
posted by hs.samix
2 comments posted 18yrs posted by hs.samix

pwm need to increase frequency

I have built the PWM circuit located here, http://www.cpemma.co.uk/pwm_erg.html The triangle osc. frequency is about 15...
5 comments posted 18yrs
posted by amdx
5 comments posted 18yrs posted by amdx

Electrolytic and Tantalum Capacitor Life?

Capacitor specs seem a little confusing about expected lifetimes. It seems to depend on various factors of temperature,...
2 comments posted 18yrs
posted by wrongaddress
2 comments posted 18yrs posted by wrongaddress

breadboarding

oh yeah! http://blog.makezine.com/archive/2008/08/bread_circuit_board_blink.html
25 comments posted 18yrs
posted by gzuckier
25 comments posted 18yrs posted by gzuckier

Searching for ultra low Cjo diodes

Hi, Does anyone know of inexpensive (less than 30 cents each @ QTY 1000) high frequency Schottky diodes with no more th...
10 comments posted 18yrs
posted by energymover
10 comments posted 18yrs posted by energymover