Hobby Electronics Basics

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Learning Electronics

Hi I've just finished some basic electrical training, and now would like to start learning electronics as a hobby. I'm...
15 comments posted 18yrs
posted by replytothread
15 comments posted 18yrs posted by replytothread

Help: Electrical Switcher Project

Has anyone ever created an electrical switcher that *mechanically* allows one to switch between appliances that run on...
6 comments posted 18yrs
posted by Searcher7
6 comments posted 18yrs posted by Searcher7

Bleeder Resistor Value & Wattage

I would like to know a general value & wattage rating for bleeder resistors. I do occasionally recapping of vintage rad...
10 comments posted 18yrs
posted by the1930s
10 comments posted 18yrs posted by the1930s

Calculating power delivered by supply

I have a quick question that has been puzzling me. I am trying to calculate the internal power dissipated inside an op...
8 comments posted 18yrs
posted by distort10n
8 comments posted 18yrs posted by distort10n

LED Reverse Polarity Protection

Hi, I'm considering using a high brightness LED in an old incandescent flashlight, in series with a 220 ohm resistor, f...
25 comments posted 18yrs
posted by the1930s
25 comments posted 18yrs posted by the1930s

Switches

Hi, I have a basic setup of a 5" LCD TV, a video transmitter and a receiver. Each piece of equipment is powered by 3 12...
2 comments posted 18yrs
posted by sedane
2 comments posted 18yrs posted by sedane

AC DC Voltage tests?

Are there any basic guidelines for testing caps, transistors, resistors,etc, in-circuit with power on? I know there are...
6 comments posted 18yrs
posted by uriahsky
6 comments posted 18yrs posted by uriahsky

Carbon rod contact resistance

I just finished soldering a #6 wire to a copper connector. I am out of propane see used a carbon rod and battery charge...
2 comments posted 18yrs
posted by amdx
2 comments posted 18yrs posted by amdx

Hex inverter question

I have a chip labeled MC14049U with the Motorola logo that I can't find a datasheet for (specifically). The MC14049UB d...
7 comments posted 18yrs
posted by db5151
7 comments posted 18yrs posted by db5151

Need suggestions for sensor technology

I've been looking into creating a MIDI controller based on this instrument: http://www.youtube.com/watch?v=rd58pPgmivI...
0 comments posted 18yrs
posted by kasterborus
0 comments posted 18yrs posted by kasterborus

Coprocessor

Hi, my can controller is attached to my microcontrolled over several pins. I allready have procedures to access the reg...
3 comments posted 18yrs
posted by thorstenkiefer
3 comments posted 18yrs posted by thorstenkiefer

STM32 woes

Anyone here familiar with ST Micro products? I just tried to install ST Micro's STM32 Starter Kit and PerformanceStick...
1 comments posted 18yrs
posted by randy.day
1 comments posted 18yrs posted by randy.day

amp probe question

I am purchasing a Greenlee CMA-60 AC/DC Clamp-on Current Adapter and would like to extend the wire leads to my millivol...
5 comments posted 18yrs
posted by rob.c.armstrong
5 comments posted 18yrs posted by rob.c.armstrong

Battery can't cope with regulator startup?

[As I don't trust my ASCII skills, I won't try to draw schematics or curves here. Images can be viewed here instead:] C...
2 comments posted 18yrs
posted by t.plus.s.plus.tabo
2 comments posted 18yrs posted by t.plus.s.plus.tabo

freq

can any one tell me about scan of body's viberation frequency
8 comments posted 18yrs
posted by drjamilurrahman
8 comments posted 18yrs posted by drjamilurrahman