Hobby Electronics Basics

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DTL (diode AND gate)

Hi all, Another digital question. I'm doing this pulse thing. Pulse widths were, 1,2,4,8,16.. simple set by a rotary sw...
8 comments posted 10yrs
posted by gherold
8 comments posted 10yrs posted by gherold

Isolation xformer question (again)

Purchased a used iso xformer. Trippe Model IS800. 6.8 amps out, 4 outlets , on/off switch and circuit breaker. Question...
24 comments posted 10yrs
posted by ivanvegvary
24 comments posted 10yrs posted by ivanvegvary

What type of motor is this OLD GE motor

All, I have an old GE motor that I cannot either date or figure out exactly what type of AC motor it is. The label says...
2 comments posted 10yrs
posted by etpm
2 comments posted 10yrs posted by etpm

Uses for diodes

Other than as a simple 'one-way current valve' in a circuit, what other purposes can diodes be used for?
43 comments posted 10yrs
posted by cbx
43 comments posted 10yrs posted by cbx

Bandwidth problem

I built a 36Khz LC parallel tuned circuit driven by a transistor biased at 2mA. It was for use in detecting IR signals...
4 comments posted 10yrs
posted by bperryb
4 comments posted 10yrs posted by bperryb

What is one volt?

I see the voltaic pile produces a voltage of about 1 volt, but not exactly. From this wiki article, a volt is 1 amp, at...
10 comments posted 10yrs
posted by bperryb
10 comments posted 10yrs posted by bperryb

Transformer Turns Question

Hi guys, I need to count the number of turns of wire on this relay core I have. Trouble is, there are way too many to d...
11 comments posted 10yrs
posted by cbx
11 comments posted 10yrs posted by cbx

OT: Electrical Outlet Alignment?

Electrical Outlet Alignment? I'm lining a wall with (purchased) bookcases. Any clever schemes for aligning cuts to exte...
61 comments posted 10yrs
posted by To-Email-Use-The-Envelope-Icon
61 comments posted 10yrs posted by To-Email-Use-The-Envelope-Icon

OT: Is there a polite way?

Is there a polite way to tell an "engineer" who is totally incompetent when it comes to running and understanding a sim...
10 comments posted 10yrs
posted by To-Email-Use-The-Envelope-Icon
10 comments posted 10yrs posted by To-Email-Use-The-Envelope-Icon

Fast Easy LED Hack

99 Cent Only Store is now selling 5 Watt E27 LEDs. They pay for themselves in a couple of months if yer like most peopl...
0 comments posted 10yrs
posted by bretcahill
0 comments posted 10yrs posted by bretcahill

Help please w/ electromagnetic slip clutch

Everybody, I'm working on a project that needs a slip clutch or brake or something. I'm turning handwheels that need so...
12 comments posted 10yrs
posted by etpm
12 comments posted 10yrs posted by etpm

OT: DVD Writing Software

DVD Writing Software? What's the best for doing simple back-ups of project files? Windows "burn" doesn't conveniently t...
28 comments posted 10yrs
posted by To-Email-Use-The-Envelope-Icon
28 comments posted 10yrs posted by To-Email-Use-The-Envelope-Icon

OT barking cat problem

OK so she doesn't really "bark." I have this stray that seems to be someone's house cat that got abandoned during the l...
8 comments posted 10yrs
posted by default
8 comments posted 10yrs posted by default

Hiding GPS On A Bicycle Frame

Assume the bike thief knew every thing about cycle design and GPS technology. Would it still be possible to design a sys...
5 comments posted 10yrs
posted by bretcahill
5 comments posted 10yrs posted by bretcahill

Dynamic Range of ADC

Hi, I am doing my design calculations for my project. I am considering using the following chip http://www.intantech.co...
8 comments posted 10yrs
posted by davebrown227
8 comments posted 10yrs posted by davebrown227