Stepped Leader in Lightning

Started by Steve Wilson in sci.electronics.design4 months ago 20 replies

On September 13, I gave a short reply to JL on the iniation of a lightning stroke. Here is the text: A stepped leader starts in the cloud and...

On September 13, I gave a short reply to JL on the iniation of a lightning stroke. Here is the text: A stepped leader starts in the cloud and reaches towards the earth. When it gets close, a streamer reaches up from the earth. When it reaches the leader, a conductive path is formed that allows the discharge from the cloud to the ground. Here are some videos in slow motion: Sprites, Je...


Perform extra electro static tests on power buttons !

Started by skybuck2000 in sci.electronics.design4 months ago 6 replies

Advice from the "battlefield". Perform extra electro static tests on power buttons ! Since I bought this couch which generates unbelievable...

Advice from the "battlefield". Perform extra electro static tests on power buttons ! Since I bought this couch which generates unbelievable ammounts of static electricity I have noticed elecric devices like monitors and PCs to start behaving irregularly because of static electric shocks to the power buttons. Symptoms are: 1. Blinking power leds 2. Failure to power up Even


13.6 GHz output signal of ADF5356 synthesizer chip

Started by Gerhard Hoffmann in sci.electronics.design4 months ago 4 replies

13.6 GHz output signal of ADF5356 synthesizer chip. The ADF5356 has an on-chip VCO from 3-6.8 GHz and outputs twice its frequency on a...

13.6 GHz output signal of ADF5356 synthesizer chip. The ADF5356 has an on-chip VCO from 3-6.8 GHz and outputs twice its frequency on a pin. Looks like the doubler has a serious symmetry problem. The 2*f output is the strongest component, but just barely. And the level is also on the weak side. That requires some serious microstrip filters. :-( < https://www.flickr.com/photos/1


Microstrip dipole anternnas as coupled microstrips

Started by amal banerjee in sci.electronics.design4 months ago 6 replies

Could some electronics guru here please clarify this a bit. As a microstrip is a transmission line, can a half wavelength dipole antenna be...

Could some electronics guru here please clarify this a bit. As a microstrip is a transmission line, can a half wavelength dipole antenna be modeled as two transmission lines, each of physical length wavelength/4, coupled capacitively? The free ends of each microstrip drive free space impedances(377 Ohm) each, whereas the other end of one is connected to the signal source, and the other mic...


OT: Commission on Debates changing rules to further protect Hiden Biden

Started by John Doe in sci.electronics.design4 months ago 5 replies

From now on, Biden can debate by reading from a teleprompter in his basement.

From now on, Biden can debate by reading from a teleprompter in his basement.


OT: Trump in debate quite as childish as expected.

Started by Bill Sloman in sci.electronics.design4 months ago 21 replies

It looks as if Trump will have to be put a sound-proof cell for the next debate to make sure that he he doesn't interrupt when Biden is...

It looks as if Trump will have to be put a sound-proof cell for the next debate to make sure that he he doesn't interrupt when Biden is speaking. It was a depressing exhibition, but Biden did manage to keep his entirely justified irritation under control. I wonder how Flyguy is going to defend Trump's performance - he may not even realise that he needs to. -- Bill Sloman, Sydeny


MCP41HVx1 anyone?

Started by jmariano in sci.electronics.design4 months ago 5 replies

Dear All, Does anyone have any experience in using one of this digital pot from this Microchip family? My project requires that I control a...

Dear All, Does anyone have any experience in using one of this digital pot from this Microchip family? My project requires that I control a voltage divider from the computer, so i'm using an Arduino to control an MCP41HV51 digital pot via SPI. I'm able to control it, no problem, thanks to Greg Srabian's library. I can program the wiper position and see the resulting resistance


OT: Flyguy is a Biden-fianced sock-puppet?

Started by Bill Sloman in sci.electronics.design4 months ago 19 replies

Flyguy seems to exists to draw attention to Donald Trump's sillier ideas. He seems more likely to be an artificial intelligence machine rather...

Flyguy seems to exists to draw attention to Donald Trump's sillier ideas. He seems more likely to be an artificial intelligence machine rather than anybody real - nobody real could be quite that stupid, and the idea that he owns a plane and is allowed to fly it is remarkably implausible. His responses will be based all the responses posted here over the years, which does explain the similari...


Experimental Cancer Treatment Destroys Cancer Cells Without Using Any Drugs

Started by Anonymous in sci.electronics.design4 months ago

This is a radically new approach, but it's grounded in well established science, so it's really making headlines....

This is a radically new approach, but it's grounded in well established science, so it's really making headlines. https://www.sciencealert.com/a-new-cancer-treatment-uses-a-trojan-horse-approach-and-no-drugs


diazepam -Marijuana - LSD -xanax -mdma -Oxys - Cocaine

Started by Anonymous in sci.electronics.design4 months ago

Wickr ID:bowe420 Snapchat:bonalegit order-payment-wedeliver -diazepam -Marijuana - LSD -xanax -mdma -Oxys -...

Wickr ID:bowe420 Snapchat:bonalegit order-payment-wedeliver -diazepam -Marijuana - LSD -xanax -mdma -Oxys - Cocaine -ketamine -meths -Tramadol more stuffs available Hit me up for more details..


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