Latest threads in Hobby Electronics Basicsshow only best voted threads

Subject Author Posted Replies
 
electrical projects for diploma students and engg
i need some electrical projects . please send me any one.
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Hi again
Can someone please look at this site an watch the videos. Let me know If you think this guy is for real? Im considering joining him! Alexx Oh yer the site lol =
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Transformer Current
Nutshell: I have a lead acid 12V battery charging device that used a wall transformer rated as 120 VAC 26W input, 12 VAC 1.6A out. The xformer failed (primary opened) and I made a replacement (12.6...
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Operational Amplifier basics
I'm trying to understand Op Amps first time round. Are the following statements correct? I've rushed it a bit, so most of it might look like nonsense. Please correct or amplify. 1 An Op Amp is...
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Tips on where to look for manual scans HP1710a
I took a chance on ebay and bought a HP 1710a scope. Powers up, has a beam I can see if I hit beam finder button but no horizontal sweep. So, now I need to find a manual with schematics for it so I...
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electronic detection of earthquakes
Hi all I happened to find the following book at Amazon, and had a question about it: Ionospheric Precursors of Earthquakes by Sergey Pulinets and Kirill Boyarchuk ISBN: 3540208399 The book description...
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Help identify a power connector (socket)
I'm trying to find the name/part # for for a smaller power plug/ socket. They appear to be used mostly for LED power cords, the plug has two pins and a and a twist connector, the socket has two holes...
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My Dynamotor
I have a Delco Remy dynamotor. It was made for tanks. Was new in 1972. There are two sets of pairs of brushes at both ends. I can see that one pair of brushes at one end outputs (Lo) voltage (i.e...
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Dynamic link library problems
Hi there, Can you help me fix two issues that pop up when I boot? 1st wWZCSLDR2.exe Entry Point Not Found Entry point aspInitialize counld not be located in the dynamic link library wlanapi.dll 2nd...
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FET circuitry
Hi, I have a project where I need to cycle the power on a 2.5=94 HDD, The power cycle is controlled by a micro. The drive need to be on during startup and switched off when the port pin on the micro...
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Reflection Coefficient Tutorial
Hi, I have created a tutorial that helps you to understand transmission lines, the reflection coefficient and VSWR. It is an interactive flash program with embedded audio lectures. It is located here:...
 
shielding/grounding question
Hey all; When a circuit is built inside a metal box to prevent hum pickup (in audio), does the metal box need to be connected to ground to provide the shielding, or is it the metal itself that blocks...
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unfamiliar symbol
I had a couple of things I wanted to figure out about the SG3525 and got to looking at the schematics for the oscillator and the error amplifier at the bottom of page 6 of the datasheet. (I wanted to...
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Relay Toggle Circuit Using a 556 Timer
I'm using your Bill Bowden's "Relay Toggle Circuit Using a 556 Timer" to control an effects loop switcher for my guitar. Here's the circuitcircuit". Could anyone tell me how to replace the momentary...
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Measuring Peak Current with a Fluke 87 III
Just recently I was using a Fluke 87 III to measure the peak current in an AC circuit. It was pointed out that I should be using the 1ms sampling range with the Min/Max mode to catch it (it was on the...
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