Latest threads in Electronics Designshow only best voted threads
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Choosing best mosfet for low voltage application
I'm building a circuit that sends power to a photographic flash unit at certain times. Basically the output of a 7555 timer is connected to the gate of a mosfet, which acts like a switch to send 6...
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19 years ago
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simple alarm trigger (cut a wire)
Hi, Is there a simple print layout or electr scheme for the following purpose : I have a fence with three barbed wires. I want a light and a siren to go off when they're cut. Siren runs on 220VAC,...
2
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19 years ago
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528MHz clock level conversion
I need to amplify a low-level 528MHz clock to an LVCMOS-level compatible (i.e., 3.3V logic) single-ended clock. I have some control over the low-level clock, but assume it's a 400mVpp sine wave. It is...
40
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19 years ago
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Use a bi-color LED as an ammeter?
What do you think of this idea to make a simple ammeter for my motorcycle - Tap into the positive lead in the battery in two spots, so the battery cable itself is like a shunt resistor. Run wires from...
30
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19 years ago
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30 | |
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The difference between a "galvanic cell" and "electrolyte cell"
Hi Reading Electrochemistry by Hamann [1998, p.237] he says that If a cell has a non offset (no DC) ac signal applied it will operate like "galvanic cell" rather than an "electrolyte cell". I was...
3
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19 years ago
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Interface
Anyone got ideas on this problem..... I want to be able to use a USB printer on a machine that has a Centronics printer output port. The printer port on the machine is not a 25 pin parallel socket, it...
14
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19 years ago
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RF transistor biasing
Hi, Why do many RF amplifiers use an external biasing resistor instead of a push pull halfbridge configuration? Is the external biasing main function to pull up the output since the amplifier only can...
11
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19 years ago
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11 | |
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Alternative to fourier transform
There was this alternative to the FFT being mentioned a few months ago. It was to be continous in time and not blockwise. As I remember, it was said to be advantageous in cases where 499.9Hz and 500Hz...
9
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19 years ago
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Thermal Design: Heatsink for partly ducted 200LFM...
I'm in need for a heat sink for a cPCI 6U board experiencing ~200LFM air flow. We're talking an approximately 15cm wide and 9cm deep profile with a height of ~9.7mm. Having given up finding standard...
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19 years ago
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What's inside an analog 4-quadrant multiplier?
The data sheets for analog 4-quadrant multiplier-on-a-chip chips are remarkably vague as to what goes on inside the chip. I'm thinking specifically of the Anaalog Devices AD633 and the Burr-Brown...
30
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19 years ago
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MC1455 Comments Please
I am sitting here looking at a simple schematic for a MC1455 Timer with a LED. The website it is posted on ( it is "The first inexpensive, effective electromedicine to destroy parasites (worms,...
4
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19 years ago
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Detecting HV transients
HI all, What's the best way to check for the presence on a signal line of high voltage transients? I can't readily think of an instrument that would fit the bill. :-| Talkin' 'bout maybe a couple of...
4
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19 years ago
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Parallel Port Access from Windows XP?
I have a pile of Quickbasic utility/hardware control programs that directly access PC parallel port hardware. I also have several legacy hardware devices that interface via the Parallel port...logic...
15
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19 years ago
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Invitation to join FTDI USB design group on yahoo.....
Hi, I just wanted to invite you to join the discussion group on yahoo with focus on FTDI's USB devices. The groups is moderated but open for everyone who wants to join, no ads, SPAM or any unrelated...
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19 years ago
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Speaking of AofE 3rd edn.
Speaking of the possible 3rd edition of The Art of Electronics... There are 2 threads about it here, but as far as I can tell, one is about patents, slavery, and Windows (?) and the other is about...
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19 years ago
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