EMC - RF IMMUNITY

Started by Anonymous in sci.electronics.design1 week ago 5 replies

Hello everyone. 1.) I have an electronics board that has 10 wires coming out that gets connected to an end users board with an Ethernet type...

Hello everyone. 1.) I have an electronics board that has 10 wires coming out that gets connected to an end users board with an Ethernet type cable. During our Electromagnetic Compatibility (EMC) Testing for the RF Immunity Testing there is a disturbance of our system around 100-120 MHz and 1 GHz –2.7 GHz. (Some of the values returned from the Analog to Digital converter o


IC of amplifier in EMCO probe kit?

Started by Joerg in sci.electronics.design1 week ago 9 replies

Does anyone know what IC they use in the amplifier of this probe kit? The P/N of the amp is 7405-907B and goes to...

Does anyone know what IC they use in the amplifier of this probe kit? The P/N of the amp is 7405-907B and goes to 3GHz. http://www.bellnw.com/media/images/products/ETS/7405.jpg It is a simple TO-92 metal can, four pins, IN, OUT, V+ and GND. Needless to say there is no lettering on it, bare metal. Just the supply, no inductor like with MMIC. Cap in, cap out, that's it. This amp is used ...


Weird I-V

Started by George Herold in sci.electronics.design1 week ago 6 replies

I'm trying to understand this I-V curve (see Ascii art below.)* the sample is a piece of n-type Si (I don't know doping density.. lightly...

I'm trying to understand this I-V curve (see Ascii art below.)* the sample is a piece of n-type Si (I don't know doping density.. lightly doped.) There are Ti/Au contacts (made into a Hall bar, A stripe of current input on each end and four voltage probe points along the length (3mm x 6mm maybe)) This is just the I-V across the large current contacts. ...


What exactly is needed to start with Zynq?

Started by Piotr Wyderski in sci.electronics.design1 week ago 9 replies

The documentation seems to be otherwise very good, but I cannot find the answer to this very basic question. I'd like to rebase my project onto...

The documentation seems to be otherwise very good, but I cannot find the answer to this very basic question. I'd like to rebase my project onto Zynq and the most promising module right now is Mars ZX2 in the extended temperature range version: https://www.enclustra.com/en/products/system-on-chip-modules/mars-zx2/ So OK, I obviously need the module itself, an SO-DIMM socket equipped bre...


Some actual electronic design work

Started by Neon John in sci.electronics.design1 week ago 21 replies

In response to numerous requests, my company is introducing a line of induction heated 20 and 50 lb aluminum furnaces that are also capable of...

In response to numerous requests, my company is introducing a line of induction heated 20 and 50 lb aluminum furnaces that are also capable of melting brass/bronze. I built the proof-of-concept furnace using a modified 3500 watt induction range. Rugged 1200 volt SiC FETs in place of the teeny tiny chicom IGBTs and altering the timing a bit to take advantage of the FETs. This modified r...


Making SSB with a raspberry pi (more for radio hams)

Started by Jan Panteltje in sci.electronics.design1 week ago 5 replies

I am not easily surpized, but in the weekend tested this: ...

I am not easily surpized, but in the weekend tested this: https://www.rtl-sdr.com/transmitting-fm-am-ssb-sstv-and-fsq-with-just-a-raspberry-pi/ on the spectrum analyzer the result for SSB is very good. You need bandpass filtering at the output of course. Amazing IQ play, no external parts required.


OT: How find Excel Picture number

Started by Robert Baer in sci.electronics.design1 week ago 13 replies

This is a multi-part message in MIME format. --------------010605070506080000040600 Content-Type: text/plain; charset=ISO-8859-1;...

This is a multi-part message in MIME format. --------------010605070506080000040600 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit In Excel, I was able to find the names/picture numbers for the first two shapes by trial and error. Then i added a third shape and unable to find the number; up to Number 35 and am tired of this BS. Is t...


Odd behavior of LTSpice for NMOS and PMOS in series with zero gate voltage

Started by P E Schoen in sci.electronics.design1 week ago 21 replies

I have been working on an analog multiplexer using discrete NMOS and PMOS devices. I have the gates connected to their respective sources...

I have been working on an analog multiplexer using discrete NMOS and PMOS devices. I have the gates connected to their respective sources through resistors and their drains are connected together. Positive and negative voltages are applied from source to source through a series load resistor. The NMOS works as expected - the body diode conducts when a negative voltage is applied and it b...


Universal display interface

Started by bitrex in sci.electronics.design1 week ago 1 reply

For debugging/repair purposes, does anyone make some kind of widget that you plug into another widget's LCD display ribbon cable connector, suss...

For debugging/repair purposes, does anyone make some kind of widget that you plug into another widget's LCD display ribbon cable connector, suss out what kind of protocol it's dealing with from some list of common display controller ICs, then say send the data via serial/USB to a PC so you can see what the display _would_ be showing in a GUI and/or log it?


USB Thumb Drive - With Physical Write Lock Switch

Started by mpm in sci.electronics.design1 week ago 11 replies
USB

USB Thumb Drive - With PHYSICAL Write Protect Switch Yes, they do make these. (For example: Kanguru FlashBlu30) My question is: Can you...

USB Thumb Drive - With PHYSICAL Write Protect Switch Yes, they do make these. (For example: Kanguru FlashBlu30) My question is: Can you reformat these if the write protect switch is active? (I'm hoping not!) If I owned one I would just verify this myself, but all my thumbs are dumb. :) Thanks!! -mpm


Ask a Question to the Electronics-Related community

To significantly increase your chances of receiving answers, please make sure to:

  1. Use a meaningful title
  2. Express your question clearly and well
  3. Do not use this forum to promote your product, service or business
  4. Write in clear, grammatical, correctly-spelled language
  5. Do not post content that violates a copyright