| protecting an FET |
A certain broadcast mixer has remote-control logic outputs, each of which is the open drain of a 2N7000 FET, the source being connected to ground. Normally these are used to do things like...
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| OT: Combined Electrical and Coax Outlet |
Trying to avoid cutting another hole in the house walls... Does anyone make a COMBINED electrical AND coax (type-F) outlet? ...Jim Thompso...
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| Hamming it up |
http://www.hamband.com/html/video.html I want to believe what they say-- that this is real, but I'm not sure where the cameras would be positioned. Best regard...
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| measuring amplitude of small high-frequency signal |
Everyone, I need to measure the amplitude of an AC signal of variable frequency between 1 and 15MHz, with amplitudes in the range of a few hundred microvolt (say 100..1000 uV). Av...
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| ferrites usage guides |
Does anybody have any good links to usage / design guidelines of ferrites to suppress noise / EMI on low level DC signals ?
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| Capacitor choice question |
Hi there, I'm looking for a DC blocking capacitor with C ~ 0.1uF (for impedance reasons) that will take fairly high AC power through it. At the upper end, I'm going to be pushing about 5W (...
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| Application of instrumentation and control. |
Cheers all.Niece to have you. I want to acquire some knowledge on the above subject. Can any one aquaint me with literature or website on the application to the following subject matters : a...
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| MC34063 vs MC34063A types |
Hi all, I am looking for the actual difference between MC34063 vs MC34063A; I have the idea that the "A" type allows setting of the output latch anywhere in the "T-on" perio...
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| Ringing choke conver without Y-Cap.? |
Hi, all, Ringing choke converter is applied in adapter or charger under 10W with Y-Cap. Now, I have to remove Y-Cap. from it that can be made in low cost with 8dB EMI m...
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| Re: Clothing stores of the future !!! =D (Advanced stores YEAH BABY :) ) |
Yes, This is what I want lol hehe: I want a space jacket ! I want a jacket with every goddamn technology on the face of the planet all stuffed into one awwweeesom...
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| Why don't they make this IC? |
I am using LEDs on PCBs as visual test points more and more as I'm sure most of you do. Wouldn't it be nice if an low cost (<$2/10) IC was available in let say a SOT-23-5 package that ...
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| How to calculate power ripple, and then to add the sutable Capacitor? |
Hi All, My audio amplifier has a lot of noise, after I connect a VCC to GND capacitor, the noise is gone. But, I did a boring thing, ==> try and error to find the value....
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| Clothing stores of the future !!! =D (Advanced stores YEAH BABY :) ) |
Hi, I am a programmer and I can't stand to be in a cloth shop for longer than 5 minutes. It just pisses me off. I'll just share you my experience and then you can judge it a...
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| design assistance |
I am looking for somebody to advise about costs of design and manufacture of a "plug and play" television game. My colleagues can handle the software side of things, and the design of the ...
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| And, after time... |
There were three men left. Two believed in one book but disagreed about its meaning. One used to belong to others who believed in a different book but the others disagreed a...
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| A five-part requirement becomes a 25-part purchase. |
How does five parts become 25? OK, here's the story. A project needs five identical circuit boards, but we're giving them one spare, so that's six. The effort in designing the PCB was ...
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| Power ON reset in FPGA |
Hi all, I have a question on POR(Power on reset generation ) using FPGA. My FPGA does not have a external Power ON reset , i am planning to generate a Power ON reset in the FPGA...
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| Aussie red wines are better than american red wines |
I have never tried an american red wine..... Dang my internet is slow tonight, must be that Aussie red wine I am drinking.
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| practical tips on SMPS design |
I have learned power electronics in university. But now i have to design a prototype. Is there any good book or application note tell me how to design a prototype. Thank you very much! ...
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| I hate america |
I dont really, just thought i might get popular if i posted something like this.
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| OT (camera related): Looking for series V slide-on adaptor ring |
Must slip over lens barrel 1.156 inches (29.36mm) diameter; presumedly a 29mm adaptor will do. ** I have the following for anyone interested: Kodak series VI slide-on adapto...
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| Gordon Moore on explosives, and semiconductors |
Fascinating talk tonight by Gordon Moore of Intel, at the Computer History Museum in Mountain View, Carver Mead acting as interviewer. (For those who don't know them, Moore was a co-found...
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| LCD drivers |
I am considering using an MCU that has built in LCD drivers, but it only implements 1:8 multiplexing. In other words, it has eight "common" lines that are sequentially asserted. I need to ...
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| power distribution in vga extender |
I am currently designing a vga extender by converting the r,g,b,hs,vs signals to 3 balanced pair signals. The goal is to use a 4th pair for powering the receiver. What is your oppinions on t...
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| LM386 / Negative feedback. |
Hi All, Finally, I decide to use LM386 for my audio amplifier, I think it is cheap and enough, am I right? One thing I not very understand is: why some circuits ...
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| Improved Audio! |
You have *GOT* to see this: Part Number 110-439 http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=110-439 Its on sale! Ed
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| One VR adjust two channel volume. |
Hi All, How to implement one variable resistor to control two channel volume? Best regards, Boki.
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| fast switching circuit/spice sim |
Hi, I'm trying to create a high speed enable/disable control for an analogue signal. I found some SD5400 DMOS ICs (quad DMOS N-type FETs) from Linear Systems that switch quickly (...
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| OT: The rich (and poor) fare better under democratic presidents |
Here is an analysis of the actual statistics. http://hnn.us/articles/8301.html
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| power supply from battery and car outlet |
I am working on a GPS data logger working on 3.3V I'm pretty much done with all the digital design but one thing is still missing and I'm not familiar enough with analog electronics to do it...
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