Hobby Electronics Basics

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Battery switch

I bought a device that will allow me to undo a plastic knob and disconnect my battery. Should I put it on the ground or...
8 comments posted 14yrs
posted by wolftracks
8 comments posted 14yrs posted by wolftracks

schematic for studiomaster mixer

Anyone have a schematic for a studiomaster powerhouse 16 mixer thanks
1 comments posted 14yrs
posted by buddy116
1 comments posted 14yrs posted by buddy116

soldering extensions onto a potentiometer

I have a potentiometer that I unsoldered from an old circuit board (from a junked appliance) & I'd like to play with it...
8 comments posted 14yrs
posted by a24061
8 comments posted 14yrs posted by a24061

OT: Solar Charging 12V Car Battery

OT: Solar Charging 12V Car Battery... My son, Aaron, software engineer turned farmer, has acreage in the San Tan Valley...
43 comments posted 14yrs
posted by To-Email-Use-The-Envelope-Icon
43 comments posted 14yrs posted by To-Email-Use-The-Envelope-Icon

capacitors in parallel

if I'm building up a pi filter (or whatever low pass filter for that matter), and need 1200uF at the input is it fine t...
8 comments posted 14yrs
posted by panfilero
8 comments posted 14yrs posted by panfilero

Powered USB Hub

I need a powered USB Hub, 7 (or more) ports. Lots of conflicting reviews out there. What do you fellow lurkers recommen...
19 comments posted 14yrs
posted by To-Email-Use-The-Envelope-Icon
19 comments posted 14yrs posted by To-Email-Use-The-Envelope-Icon

piezo transducer; polarity; current

I've been playing with a piezo transducer in 556 circuits (at higher frequencies than with LEDs). The Rated Voltage (Vp...
16 comments posted 14yrs
posted by a24061
16 comments posted 14yrs posted by a24061

Electronic Challenge Help Requested

Hello all, Not sure how much activity is in this group so this is a test posting. I have an electronic challenge and wa...
78 comments posted 14yrs
posted by royboynospam
78 comments posted 14yrs posted by royboynospam

OT: Easel Question

Does there exist an "easel" that would solve my problem... http://www.analog-innovations.com/SED/EaselQuestion.jpg Prop...
23 comments posted 14yrs
posted by To-Email-Use-The-Envelope-Icon
23 comments posted 14yrs posted by To-Email-Use-The-Envelope-Icon

how to select capacitor based on freq impedance

Is it possible to calculate a capacitance value from a required impedance at a frequency, say for example "impedance fo...
9 comments posted 14yrs
posted by panfilero
9 comments posted 14yrs posted by panfilero

FPGA power consumption

A client of mine is trying to build head mounted displays for the DARPA SCENICC program. http://tinyurl.com/6wygjlj It...
1 comments posted 14yrs
posted by pcdhSpamMeSenseless
1 comments posted 14yrs posted by pcdhSpamMeSenseless

transformer winding ratio question

I have a basic question about transformer ratios, if I have 3 windings, a pri, a sec and an aux, what's the voltage exp...
3 comments posted 14yrs
posted by panfilero
3 comments posted 14yrs posted by panfilero