Hobby Electronics Basics

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Phasor to Complex

Hi I have calculated the following network using the cosine law. ___SIGGEN (Vs)_ ¦ ¦ ¦--/\/\/\/\-----¦ ¦----¦ ¦ Vs Vc ¦...
0 comments posted 22yrs
posted by nospam-mail
0 comments posted 22yrs posted by nospam-mail

computer and energy use

Does it really consume less energy to leave the computer on the whole day than to repeatedly turn it off and on (maybe...
0 comments posted 22yrs
posted by juggler923
0 comments posted 22yrs posted by juggler923

Can MOSFETs be tested with OhmMeter?

We can test normal PNP and NPN transistors with OhmMeter. Can we test (how) MOSFETs in the same way?
4 comments posted 22yrs
posted by <Umma Friel>
4 comments posted 22yrs posted by <Umma Friel>

Hot H20 electricity consumtion metering

Hi...I need to determing how much electricity a solar water heater is replacing. The solar heater preheats the water be...
5 comments posted 22yrs
posted by rcam001
5 comments posted 22yrs posted by rcam001

Average Current

hi all For a 1n540x diode average forward current is given 3amps, read in the data sheet. Is this average current the sa...
6 comments posted 22yrs
posted by nospam4ujack
6 comments posted 22yrs posted by nospam4ujack

Remote LEDs

I have a client who would like me to design and build a gizmo the does the following: Two people roughly 5-6m apart. On...
4 comments posted 22yrs
posted by danno
4 comments posted 22yrs posted by danno

Ringing from switch-mode PSU poluting power rails

Hi, I have a switch-mode powersupply unit that's injecting a high-frequency ringing onto the input power rails (which i...
7 comments posted 22yrs
posted by d.kellyNOSPAM
7 comments posted 22yrs posted by d.kellyNOSPAM

Regd: MOS Transistor basics help

Hi I need some help in understanding the difference between - Gate Length Gate width Channel Length Channel Width Chann...
5 comments posted 22yrs
posted by kranthi_q
5 comments posted 22yrs posted by kranthi_q

any replacement

hi all i need six, 2 input nand schmitt trigger gates in a single ic. i just don't want to use 2, cd4093 ics. Is there a...
1 comments posted 22yrs
posted by nospam4ujack
1 comments posted 22yrs posted by nospam4ujack

Q on Transistor

Hi, Is it possible to saturate the NPN BJT transistor in this biasing ? Vcc ___ | | | _| C B | ---- Resistor ----| | -...
4 comments posted 22yrs
posted by tatto0_2000
4 comments posted 22yrs posted by tatto0_2000

Low voltage indicator

Hi, I am building a small circuit that will have a supply voltage of 9V from a battery. I would like to detect when the...
7 comments posted 22yrs
posted by glitz
7 comments posted 22yrs posted by glitz

Does a triac switch DC ?

Im trying to make a solid state relay with a triac (BTA16 600B) Im just testing it by turning on the gate and trying to...
1 comments posted 22yrs
posted by quiksilv
1 comments posted 22yrs posted by quiksilv

Resistors in parallel

When you don't have exactly the resistor value you want, put two in parallel to make it. Use this to find the right com...
0 comments posted 22yrs
posted by source
0 comments posted 22yrs posted by source

Voltage Divider Rule using Admittance

I have a question about the Voltage Divider rule. I am looking at a example in a textbook to calculate a transfer funct...
0 comments posted 22yrs
posted by golson
0 comments posted 22yrs posted by golson

A/D conversion by PC sound card?

Dear All, I want to implement a simple A/D conversion by PC sound card input channel(Line in / MIC in), therefore I can...
4 comments posted 22yrs
posted by bokiteam
4 comments posted 22yrs posted by bokiteam