Electronics Design - Main Page

Do you have a question? Post it now! No Registration Necessary

Electronics Design - Design your own electronics! You are not alone.
Web, RSS and Social Media interface to sci.electronics.design
There are 616861 individual articles here that are part of 34634 discussions
Please see below the list of the most recent and the best rated articles in Electronics Design

The most recent discussions

Electret JFETs in SC106 or 3-VTFP?

May 6, 2016, 6:43 pm

Folks, ON Semi has just end-of-life'd their whole slew of electret microphone JFETs, TF202, TF252 and TF262. Other types from Panasonic for pyro sensors have more than 10x the bias current, can'... Read more »

Hot plugging serial EEPROM

May 6, 2016, 2:43 pm

I have an application where a large connector, likely a d-sub, will need to contain a serial NVRAM device to hold information about what is attached t o the connector. Very little storage will be... Read more »

Injecting a bit of chaos into your day -- Chua's circuit

May 6, 2016, 1:50 pm

Diddling with things for possible future videos. I think I can make an example of a Chua's circuit using a motor with attached pendulum for the tank -- hence the oddball component values. Shove... Read more »

nice cloud pix

May 6, 2016, 11:34 am

https://cloudappreciationsociety.org/ -- John Larkin Highland Technology, Inc lunatic fringe electronics Read more »

nice fA opamp

May 5, 2016, 8:11 pm

http://www.analog.com/en/products/amplifiers/operational-amplifiers/ada4530-1.html#product-overview Input current is typically 0.1 fA at room temp. Noise and offset specs are impressive for a fA op... Read more »

OT: How many greenies does it take to change a working light bulb?

  [ 2 ]
May 5, 2016, 7:49 pm

How many greenies does it take to change a working light bulb? Answer. Seventeen: One to claim the light is out, when it really isn't. One to observe the light is still working but is afraid to te... Read more »

150W current source, with a current-mode switcher

May 5, 2016, 2:12 pm

Here's something for y'all to knaw on, a 150W current-source SMPS, made with a current-mode controller. It has external monitoring and programming with 0-to-5V signals. Most power supplies have l... Read more »

Design of a power supply for a non certified KNX bus

May 5, 2016, 10:40 am

I like the idea of KNX TP1 bus: a two-wires half-duplex bidirectional multi-master bus at 9600bps. The most important thing is data *and power* are on the same couple of wires. There are many KN... Read more »

Video: What is a PID Controller?

  [ 2 ]
May 4, 2016, 5:48 pm

Just posted a video. It's my first real effort and, as videos go, rough as a cob -- but I think the information is solid. I have a 15-minute time limit -- trying to fit an informative video into ... Read more »

OT: Brexit - the case for a yes in the referendum June 23

May 4, 2016, 8:45 am

Interesting speech from a Brit pol (Lord David Owen) yesterday laying out the case for a Brexit and strengthening NATO (rather than EU defence) as the best approach to collective security. Bei... Read more »

Click here for other recent discussions »

The best rated discussions


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 »


EPE TENS circuit.

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


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 »


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 »


is the hendershot generator ad a scam?

  [ 2 3 4 ]

is it a scam? Will it work in a residential home ? Read more »


micropower boost circuit

  [ 2 ]

I need a DC to DC boost circuit with an output defined not with respect to ground, but with respect to the input, which is variable. Output about 15 volts above the input, over a wide range -- f... Read more »


2.5KVA transformer on square wave 1000hz mains

I just bought a 50/60 hz transformer rated 575VAC pri to 230VAC sec rated at 2.5KVA on ebay. I remember reading some time ago that transformer companies rated their transformers to 1000 hz. I'm needi... Read more »


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 ... Read more »


C programming question for Arduino

  [ 2 ]

I'm wanting to make timers that work like PLC timers, a condition comes true, a preset period of time later code is executed. It would be something like: void mytimer(bool enable, long preset) void ... Read more »