Latest threads in Hobby Electronics Basicsshow only best voted threads
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DC/AC voltages adjacent to each other
Hi, What is the guidance/rules on DC and AC in close proximity eg: 1. Relay on small PCB. Relay circuits and coil run at 24v DC. Want to operate Relay contacts at 230v AC. Relay rated for DC coil and...
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15 years ago
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diagnosing an ailing Li-Ion battery pack
Hi all, I'm trying to figure out what's wrong with a Li-Ion battery pack. It's a cheap one that I got from eBay for my DSLR camera. After taking a photo with this battery, the camera shuts down...
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15 years ago
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motorbike voltage regulator
I built this voltage regulator a while back: with the difference that I flipped the entire circuit's polarity to put the field switch in the ground, because my bike generator's field switched on the...
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15 years ago
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Accelerometer
Hi, I am planing to use an analog accelerometer ( ADXL330KCPZ) in a project. And i have following questions 1. The accelerometer will place flat on the table. How can I get or calculate the angle...
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15 years ago
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television problems
I have been living in the same house for 12 years. I am living in Las Vegas, NV. Every tv i have plugged in has had TERRIBLE reception. Every antenna i buy is not improving things. The only time i've...
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15 years ago
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7 | |
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Microwave High Voltage Hazards
We have an old non working microwave oven that I want to pull apart and use the transformer for scrap metal. But I'm not sure whether I should just reach in. The microwave has been out in the rain and...
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15 years ago
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Small Laser Components
For a model I am making, a couple of small lasers could improve it. I know there are laser pointers. The effect I would like is just that of a beam, at most a two foot range. 1. Can anyone recommend...
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15 years ago
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EverPrecision 2002 CNC machines
Hi all, Just soliciting some input from anyone who's used an EverPrecision 2002-series device before (see what I mean, similar to an LPKF S42, but slightly better spec). I've been looking around for a...
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15 years ago
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instrument tubing
can anybody suggest me which material is suitable to be used in SALINE (near sea) environment for tubes.rightnow we are using SS but it also gets rusted or give your valuable recommendation have a...
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15 years ago
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how much current can AWG wire handle
Hello, Does anyone know where I can find out how much current specific gauges of wire can handle? I've looked up web pages on it, but can't figure out what they mean... for example at There's a column...
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15 years ago
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63 | |
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Connecting Digital Converter Box to an old TV
I admit it, I don't get it. Digitally illiterate. I don't know the difference between an ohm and a mho. I have this TV I bought in 1975, RCA XL-100. Still works, why junk it? Uses a remote control...
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15 years ago
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need help urjently
Does ne body knw what do the initials in the names: BC557,and IN4148 mean?? I mean what do 'B' and 'C' in BC557 and 'I' & 'N' in IN4148 mean?? I wanted it for my external viva.
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15 years ago
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channel length modulation
Hi, if i calculate mosfet's channel length modulation only from channel length parameter, is it right?is it totally independent from channel width? thanks
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15 years ago
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Release/Revision standard notation?
Hi all, Can anyone tell me the format behind "Revision/Release" notation? For example: Rev. 1.30.35; which is so common in software (and some hardware). Is it an arbitrary system? I've tried searching...
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15 years ago
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Ringing Voltage from Phone
How would I get a relay to operate with the ringing voltage on the phone line Rick
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15 years ago
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