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Please see below the list of the most recent and the best rated articles in Electronics Design

The most recent discussions

Sutro two-er

November 22, 2019, 9:00 pm

https://www.dropbox.com/s/ydow3dsmrwzzztu/Sutro-two-er.JPG?raw=1 -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott co... Read more »

RF power question

November 22, 2019, 8:43 pm

We have an acquaintance who wants to put a roughly 1 KV (2K p-p) sine wave into a roughly 12 pF load near 500 MHz. He wanted us to modify our Pockels Cell driver, but that makes kilovolt or so unip... Read more »

gEDA PCB footprints for potted transformers.

November 22, 2019, 1:34 am

I looked at that gedafootprints site but they only had one(1) transformer of the wrong size. So here's my .inc file for those. Beware. dimensions were hand transcribed from a pdf. # single output ... Read more »

OT: Providing Hope Va

November 22, 2019, 12:09 am

Anyone ever entered one of these raffles? They get promoted on my Facebook a lot: There seems to be some question as to this organization's legitimacy: Read more »

Though most of you won't care

  [ 2 ]
November 21, 2019, 4:33 am

My dad passed away early this morning, so I will be taking a break for Usenet and other online groups for the time being. My email address is good, if someone needs something from me. Goodbye. Read more »


November 20, 2019, 6:37 pm

Is there any advantage to wiring two geophones in series? Is their sensitivity limited by spring and mass so you gain nothing, assuming you have enough gain. They were on sale at $9.95, just went... Read more »

OT Puzzle if you have time

  [ 2 ]
November 20, 2019, 6:14 pm

1+2=21 2+3=36 3+4=43 4+5 =? Read more »

clee phone AVC

  [ 2 3 ]
November 20, 2019, 4:35 pm

Relative to some recent political reporting, a person was claimed to shout into a cell phone so loud that the other person had to take it away from his ear, and then other people in the restaurant ... Read more »

Is an STM32F437VGT7 an exact plug-compatible superset of STM32F417VGT6?

November 20, 2019, 3:51 pm

Sorry to ask this rather obscure Q but ST engineering is not really contactable via any normal means... It looks like a superset in every way, comparing the data sheets. They even made the 2MB of ... Read more »

Could I have a little order with that chaos?

November 20, 2019, 3:33 pm

pride ouselves on how orderly it is... Definitely mind blowing. Read more »

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The best rated discussions


STmicro acceleration/magnetic sensor LSM303DLH == LIS331DLH + HMC5834?

Just had a look at the LSM303DLH datasheet and had a déjà vu ;-) It looks like ST has simply put a LIS331DLH and a HMC5843 into one package. (The HMC lacks the built-in voltage regulator) All data ar... Read more »


LT Spice schmitt oscillator

  [ 2 ]

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 ... Read more »


propagation velocity experiment

This would involve CK722 transistors, slotline samplers, and pecan pralines [1]. Unit of measure would be kiloseconds. Let's see what happens. John [1] The crunchy kind, of course. Only Yankee touris... Read more »


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... Read more »


DSP Device for Guitar Pedal Effect

  [ 2 3 ]

I was wondering what DSP chip would be appropriate for a guitar pedal effect. I need to sample the incoming signal preferably at 96kHz perform a simple numeric function upon each sample and output h... Read more »


rechargeable batteries

Hello How can I charge a rechargeable battery in the lab, what's the 'reverse connection'? Read more »


Tek TDS 744A -> TDS 784A upgrade hack!

Hi, all, Just wanted to report success in upgrading my TDS 744A scope (500 MHz, 2 gigasamples) to a much swoopier TDS 784A (1 GHz, 4 gigasamples). It now identifies itself as a TDS 784A everywh... Read more »


EPE TENS circuit.

Would anyone have a circuit for the EPE TENS machine ?. Cheers .... jk Read more »


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... Read more »


Protection circuit to be used for a gate pulse of SCR

Hello, I am doing a project on a temperature control system.My controller has been designed in LabVIEW and I get a control signal of 0-5V output from DAQ which needs to be given as gate pulse to SCR.... Read more »