Hobby Electronics Basics

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voltage scaling

I am using an analog sensor and would like to scale the output voltage down prior to recording the value. I am running...
10 comments posted 20yrs
posted by gweedo225
10 comments posted 20yrs posted by gweedo225

Is it a no-no to parallel power rectifier diodes?

I need a reverse battery voltage scheme for a 60A max automotive circuit design. Nominal current is 50A. My first idea...
12 comments posted 20yrs
posted by gerbermultit00l
12 comments posted 20yrs posted by gerbermultit00l

Confused about enhancement mode MOSFET basics

Every example I have seen for N channel MOSFETS assumes current flows from drain to source when gate voltage is positiv...
2 comments posted 20yrs
posted by gerbermultit00l
2 comments posted 20yrs posted by gerbermultit00l

How to provide analog power

Hi all This is most likely a dumb question, but :-) I do have a digital design requiereing 3.3 and 5v supply. One of th...
3 comments posted 20yrs
posted by m.zingg
3 comments posted 20yrs posted by m.zingg

30 second delay (on and off)

I need to close a relay 30 seconds after a signal is present, and open the same relay 30 seconds after the signal drops...
11 comments posted 20yrs
posted by wrongaddress
11 comments posted 20yrs posted by wrongaddress

balancing sensors

Hi all, I am building a sensor cicuit, 2 sensors. Simple sensor with Vdd, GND and Vout. The too sensor are read by my m...
11 comments posted 20yrs
posted by lerameur
11 comments posted 20yrs posted by lerameur

moon

Is it possible to bounce signals off the moon to other places on earth? (i.e. use the moon as a comm satellite)
8 comments posted 20yrs
posted by bob
8 comments posted 20yrs posted by bob

which ground reference for +12vDC?

Hey all; I'm trying to use an analog switch (MAX4661) to switch 12v from my guitar amp to ground. This is going to be s...
0 comments posted 20yrs
posted by toccata
0 comments posted 20yrs posted by toccata

LM35 Problem

Hi, As a complete electronics novice I am struggling to get a LM35 to work properly. I know it should be simple but for...
2 comments posted 20yrs
posted by remcg
2 comments posted 20yrs posted by remcg

Most powerful super-tweeter?

Hi: Where can I find the world's most high-frequency super-tweeter? My current super-tweeter outputs a highest-frequency...
9 comments posted 20yrs
posted by glucegen1
9 comments posted 20yrs posted by glucegen1

dc rms voltage?

Hi Does anyone know what is "rms dc voltage"? Thanks Ilan
3 comments posted 20yrs
posted by ilany78
3 comments posted 20yrs posted by ilany78

Driving a Peizo Element

Hi I am currently driving a Piezo element (Part number KBS-27DB-3A) via a transistor with a resistive load running on 5...
5 comments posted 20yrs
posted by itisme33
5 comments posted 20yrs posted by itisme33

Problem with decade counter simulation in multisim9

Hi, I am having a little trouble with a test im running on a decade counter. The circuit is supposed to move a single h...
1 comments posted 20yrs
posted by wayne_tams
1 comments posted 20yrs posted by wayne_tams

Anti rust device schematic

Hi, I'm looking for a schematic to construct a anti rust device, to be fitted to a 12v car. Can anyone help?
4 comments posted 20yrs
posted by Dr.chongff
4 comments posted 20yrs posted by Dr.chongff