Best Rated threads in Electronics Designshow all threads
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LT Spice schmitt oscillator
Does anybody have a working LT Spice netlist for a simple schmitt inverter/R-C oscillator? I tried one using the library schmitt inverter and get obscure sim errors, and I don't understand the HELP...
23
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14 years ago
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23 | |
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Bi-directional audio over power cable
Hi, I'd like to add an intercom functionality to a broadcast camera and I'd appreciate opinions about the different solutions I have in mind. The main restrictions come from the cable, which is a big...
9
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15 years ago
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9 | |
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Re: floppy drive emulator hardware usb or sdcard
en e NoLife ;-) One possibility is a virtual drive. One, create a virtual drive in memory. Two, make an image of your floppy disc contents on a flash drive. Three copy the image from the flash drive...
2
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16 years ago
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2 | |
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brushless motor rectifying
Hi, If you have a wye wound brushless generator and rectify it with a 6 diode full wave rectifier, or if you rectify it with a 3 diode half wave rectifier with the wye common being ground, the voltage...
7
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16 years ago
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7 | |
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rechargeable batteries
Hello How can I charge a rechargeable battery in the lab, what's the 'reverse connection'?
6
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16 years ago
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6 | |
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Visio logic symbols
Does anyone know of a location from which to download simple logic symbol shapes for Visio (and gate, or gate, etc)?
21
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16 years ago
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21 | |
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EPE TENS circuit.
Would anyone have a circuit for the EPE TENS machine ?. Cheers .... jk
10
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17 years ago
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10 | |
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Squegging in LC oscillators
I have been playing around with my homebrew VFO, a Hartley oscillator, with a tapped inductor in the tank. Rough parameters: 6AH6 pentode for the VFO, tank resonant at 1.8Mc, plate circuit resonant at...
19
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17 years ago
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19 | |
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Composite to VGA converter Circuit
Hey guys, I have pretty basic electronics knowledge, but I'm looking to build a circuit that will convert a composite signal to a VGA signal. what I want to do is be able to watch TV on a LCD monitor,...
22
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17 years ago
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22 | |
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Re: Strange control problem -- SOLVED!!! -- 3 phase "firing system"
Glen, I solved the mystery. (about the firing system tripping on overcurrent with small currents, on a 200A welder) Here's what it was all about: The current sensor (connected to DC shunt) was NOT,...
14
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17 years ago
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14 | |
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Secure PIC programming
Hi We have customers using PICs who sometimes need to re-program them with updated firmware. It's inconvenient to have to ship the equipment back to a service centre, and most customers are quite...
14
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18 years ago
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14 | |
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Pll LMX applications?
Has anyone used the LMX2306 (National Pll) recently. I want to stabilize a VCO at 168 MC and would like to use a 16F84 PIC as a controller but can't write my own program for it. GHF
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18 years ago
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FT245BM problem: missing/corrupt data
Hello, We are facing a corrupt/missing data problem with FT245BM: If the "pull down on USB suspend" option is enabled in EEPROM, on startup, we get 126 bytes of garbage followed by the first byte from...
16
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18 years ago
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16 | |
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Gold edge connectors: Update
Last month I was asking about gold edge fingers for some extender boards for Ampex AVR-2 and AVR-3 videotape machines. We went with PCFabExpress (from the list of low cost board houses in July). The...
7
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18 years ago
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7 | |
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Batteryless bicycle lights, new kind dynamo
No battery is needed. No friction on any parts of the bicycle. Based on a newly invented generator, this light system works regardless the bicycle's speed and weather conditions (not like normal...
10
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18 years ago
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10 | |
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PSPICE, Demo version, Model editor won't "Export to Capture Library"
Hello, I've been playing with Orcad PSPICE (DEMO version) this past week. I'm trying to make a model of an inductor which saturates with current. I'm planning on using the LBREAK part and feed it some...
19
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18 years ago
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19 | |
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LTSpice: importing models?
As some readers would already know, LTSpice is a great analog simulator but most of the included models are Linear Tech brand. I have done some research, but still can't figure how to reliably import...
4
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19 years ago
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4 | |
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How to isolate 5V and 12V circuit
Hello everyone, I have extend existing circuit design by adding a 12V relay to it. AT the moment both 5V and 12V circuit are side by side. This doesn't work well. Intermitent device failure happen. I...
3
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19 years ago
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3 | |
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Design of process control timer
hello sir, i am working a s a lecturer in Bannari Amman Institute of technology,now i am handling electronics system design lab for ECE 3rd year. this design of process control experiment is there for...
1
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16 years ago
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1 | |
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RFI from Enphase micro-inverters
Hi, I am considering having solar panels installed. The main non serial-string-of-panels systems seem to be SolarEdge and Enphase. Solaredge apparently causes RFI; that system uses switching DC-DC...
6
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3 years ago
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