Hobby Electronics Basics

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240V circuit loading

I didn't happen to ask the electrician when it was put in... We have a 240V 50A circuit, which was ran for my welder (a...
7 comments posted 20yrs
posted by tmoranwms
7 comments posted 20yrs posted by tmoranwms

AC/DC Adaptor schematic symbol

Hello, Does anyone out there know, if there is a schematic symbol for an AC/DC adaptor. If not, then what would be the...
8 comments posted 20yrs
posted by mike_cicoria
8 comments posted 20yrs posted by mike_cicoria

How to find Power-on Surge Current

Hi, How to calculate the Power-ON surge current of a IC. . Shall i take the maximum current as Power-ON surge ? But nor...
0 comments posted 20yrs
posted by ponganesh
0 comments posted 20yrs posted by ponganesh

Wiring Ear-clip HR monitor to DB9

I'm pretty clueless when it comes to electronics.... If I have a stereo cable, with the ground, the red wire, and the w...
1 comments posted 20yrs
posted by jb1566
1 comments posted 20yrs posted by jb1566

aggregate transfer rate

anybody know what is tha exact meaning of 'aggregate' transfer rate, which is often used to describe the bandwidth of a...
7 comments posted 20yrs
posted by dy.coup
7 comments posted 20yrs posted by dy.coup

PAL's and GAL's

Hi ppl, I need to program sevetal PAL's and GAL's in an educational enviroment. I will be using a hobbyist programmer t...
31 comments posted 20yrs
posted by jozamm
31 comments posted 20yrs posted by jozamm

JFETs and "pinch-off" - two meanings?

Hi All, When reading descriptions on the operation of JFETs, I repeatedly see mention of "pinch-off". Some books on JFE...
14 comments posted 20yrs
posted by billcalley
14 comments posted 20yrs posted by billcalley

LEAD ACID BATTERY

Hi, I have to design a voltage source ( +/- 18volts, 13A ) using lead acid batteries. My circuit draw is 700mA and requ...
7 comments posted 20yrs
posted by conphiloso
7 comments posted 20yrs posted by conphiloso

Xilinx ISE DRC: An antenna found

Hi all, After I use Xilinx ISE do Place & Round and generate bit file, I am confused with a DRC warning=E3=80=82 "WARNI...
1 comments posted 20yrs
posted by zhushenli
1 comments posted 20yrs posted by zhushenli

Many ground pins on the IC

Hi guys, my transceiver IC have multiple Vcc and GND pins. Do i have to route all my Vcc to all the Vcc pins and all my...
3 comments posted 20yrs
posted by vcteo1
3 comments posted 20yrs posted by vcteo1

Battery pack and charger question

I have a Kenwood PB-39 9.6V NiCd battery for my Kenwood TH-G71. It has 5 contacts on it. On the side that is in contact...
4 comments posted 20yrs
posted by 1qazse4
4 comments posted 20yrs posted by 1qazse4

proba

Hi All! When I read about a particular discrete amplifier circuit, and they begin discussing the S11 and the S22 of the...
0 comments posted 20yrs
posted by sanjincosic
0 comments posted 20yrs posted by sanjincosic