1
vote
1answer
120 views

What are those “cheap” parts kits made of

I hope this will not be categorized as buying related question because my question is not really on should I buy this or this. I usually find some parts kits, usually resistor/capacitors/trimpots, ...
1
vote
3answers
278 views

What components can an FPGA replace/emulate?

I've been under the impression that FPGAs were merely, well, field-programmable gate arrays, but I've seen some example schematics with resistors, capacitors, and such in them. As such, can an FPGA ...
3
votes
1answer
398 views

Octopus Component Tester Analysis

I'm a beginner in electronics and my knowledge is pretty basic. I've been trying to understand how the Octopus Component Tester Works. I know that it's outputs should be used to plot a Current x ...
-2
votes
1answer
131 views

Please Help me identify this PT 1K ohm resistor's (Packaging)

Please refer to the attached Images. Dimensions: Hieght and Breadth: 42mm Thickness: 25mm I know its PT 1k Ohm resistor(Positive Temperature Coefficient) and its two connecting wires are ...
16
votes
3answers
969 views

What is this resistor for in this circuit?

I am studying electronics and I am currently reading/working my way through "Make: Electronics" by Charles Platt. Here is one of the circuit diagrams that he gives for making a basic burglar alarm: ...
6
votes
1answer
198 views

What are suggestions for resistor and capacitor substitutions?

When thinking about substituting components, I know that resistors are easily substituted within their 10%/5%/1% tolerances. But what about wattage on a resistor? Is it safe to do substitutions, say ...
3
votes
1answer
165 views

Can anyone identify this component?

I'm trying to solder together a small LED array with a dimming knob out of a bunch of old parts I have laying around, but I can't seem to identify how to wire this component: The two connectors at ...
0
votes
1answer
209 views

How to properly store components efficiently and effectively [duplicate]

Possible Duplicate: What's the best way to store and categorise resistors/capacitors/ICs/etc? I have MANY resistors and many other components as well and currently I am using a very ...
2
votes
3answers
174 views

linear resistor values series?

The values for resistors in a typical series, like E12, follow an exponential series (hence the "E"?). 10, 12, 15, 18, 22, etc., everybody knows them by heart (at least E12). But often you want simple ...
17
votes
8answers
6k views

Organizing electronic parts?

I've got one of these cabinets, which I intend to use for storing electronic components: It has 24 drawers (each 175 x 69 x 37mm). Every drawer can be subdivided into up to six compartments by ...
8
votes
6answers
2k views

Inexpensive solid-state variable resistor

I have an analog audio project I'm playing around with designs for and it will need about 150 solid-state variable resistors. I plan to control these from a micro controller so a digitally controlled ...
34
votes
23answers
17k views

What's the best way to store and categorise resistors/capacitors/ICs/etc?

I did a big cleanup of my collection of parts today and I now have a big pile of parts on my desk (the majority of which is resistors). My previous method of finding the resistor value I wanted was to ...