Reply by Tim Williams●September 22, 20202020-09-22
Yellow. This guy's photographing dies (mostly old and metal can parts) and
avalanching many of them:
https://www.richis-lab.de/Bipolar07.htm
Tim
--
Seven Transistor Labs, LLC
Electrical Engineering Consultation and Design
Website: https://www.seventransistorlabs.com/
"John Larkin" <jlarkin@highland_atwork_technology.com> wrote in message
news:3h77mfdafenetfvm3s31qjb88bpl55plsd@4ax.com...
Reply by Tim Williams●September 22, 20202020-09-22
"John S" <Sophi.2@invalid.org> wrote in message
news:rk0ufg$bri$1@dont-email.me...
>> Nuts do it as well, so why shouldn't a JFET?
>>
>> https://i.imgur.com/WxqQIEB.jpg
>
>
> Ohhhh, you didn't mean peanuts or gonads, it seems.
Well, those too. True fact: the human body glows, imperceptibly but only
just barely so, in deep red. As I understand it, you can't see it with dark
adapted eyes, but it doesn't take much better of a camera to see it. Cause
is singlet oxygen species -- in short, metabolism. The same emission when
30% hydrogen peroxide and high strength bleach are mixed (at which
concentration it is visible).
Tim
--
Seven Transistor Labs, LLC
Electrical Engineering Consultation and Design
Website: https://www.seventransistorlabs.com/
Reply by Bill Sloman●September 19, 20202020-09-19
On Sunday, September 20, 2020 at 1:02:56 AM UTC+10, jla...@highlandsniptechnology.com wrote:
> On Sat, 19 Sep 2020 14:19:17 +0200, Arie de Muynck
> <no....@no.spam.org> wrote:
>
> >On 2020-09-18 21:03, Dmitriy Pshonkin wrote:
> >> https://www.researchgate.net/publication/327860836_Investigating_SiC_MOSFET_body_diode's_light_emission_as_Temperature-Sensitive_Electrical_Parameter
> >
> >Measuring the photo current, and then displaying the value in mV?
> >
> >The forward voltage of the photo diode will be very depending on
> >temperature (threshold, leakage will vary). The diode is placed on top
> >of the FET gel, so it's temperature will also have varied.
> >
> >Apart from the fun fact that light has been observed, this research is
> >practically useless.
> >
> >It should be mandatory to add a well-qualified electronics engineer to
> >scientific teams dabbling with electronics. And to review teams.
> >
> No, that would remove the substantial amusement available from many
> scientific papers.
Worse, it would stop the graduate students from using quick and dirty solutions that only work because you've got a graduate student to use as part of the control loop. The net result would be that rather less scientific research would get done - what was done would be a bit more reliable, but there's no strong correlation between the quality of the electronics and the significance of the results obtained, so you end up with a net loss.
--
Bill Sloman, Sydney
Reply by George Herold●September 19, 20202020-09-19
On Saturday, September 19, 2020 at 8:30:09 AM UTC-4, Arie de Muynck wrote:
> On 2020-09-18 21:03, Dmitriy Pshonkin wrote:
> > https://www.researchgate.net/publication/327860836_Investigating_SiC_MOSFET_body_diode's_light_emission_as_Temperature-Sensitive_Electrical_Parameter
>
> Measuring the photo current, and then displaying the value in mV?
>
> The forward voltage of the photo diode will be very depending on
> temperature (threshold, leakage will vary). The diode is placed on top
> of the FET gel, so it's temperature will also have varied.
>
> Apart from the fun fact that light has been observed, this research is
> practically useless.
>
> It should be mandatory to add a well-qualified electronics engineer to
> scientific teams dabbling with electronics. And to review teams.
>
> Arie
Sure, everything is a function of temperature.
I didn't know SiC forward biased was an led...
but indirect, so not so good efficiency.
George H.
Reply by Phil Hobbs●September 19, 20202020-09-19
On 2020-09-17 20:20, John S wrote:
> On 9/17/2020 5:46 PM, Piotr Wyderski wrote:
>> Tim Williams wrote:
>>
>>> Yes.
>>
>> Nuts do it as well, so why shouldn't a JFET?
>>
>> https://i.imgur.com/WxqQIEB.jpg
>
>
> Ohhhh, you didn't mean peanuts or gonads, it seems.
I saw that one with the caption, "Extra heavy-duty Russian LED".
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.nethttp://hobbs-eo.com
Reply by ●September 19, 20202020-09-19
On Sat, 19 Sep 2020 14:19:17 +0200, Arie de Muynck
<no.spam@no.spam.org> wrote:
>On 2020-09-18 21:03, Dmitriy Pshonkin wrote:
>> https://www.researchgate.net/publication/327860836_Investigating_SiC_MOSFET_body_diode's_light_emission_as_Temperature-Sensitive_Electrical_Parameter
>
>Measuring the photo current, and then displaying the value in mV?
>
>The forward voltage of the photo diode will be very depending on
>temperature (threshold, leakage will vary). The diode is placed on top
>of the FET gel, so it's temperature will also have varied.
>
>Apart from the fun fact that light has been observed, this research is
>practically useless.
>
>It should be mandatory to add a well-qualified electronics engineer to
>scientific teams dabbling with electronics. And to review teams.
>
>Arie
No, that would remove the substantial amusement available from many
scientific papers.
--
John Larkin Highland Technology, Inc
Science teaches us to doubt.
Claude Bernard
Reply by Arie de Muynck●September 19, 20202020-09-19
Measuring the photo current, and then displaying the value in mV?
The forward voltage of the photo diode will be very depending on
temperature (threshold, leakage will vary). The diode is placed on top
of the FET gel, so it's temperature will also have varied.
Apart from the fun fact that light has been observed, this research is
practically useless.
It should be mandatory to add a well-qualified electronics engineer to
scientific teams dabbling with electronics. And to review teams.
Arie
Reply by Dmitriy Pshonkin●September 18, 20202020-09-18
All sorts of semis may glow, but most are potted in black epoxy.
It would be cool to zener a photodiode. They are specifically designed
for good optical paths into (thus out of) the semiconductor.
A forward-biased compound-semi photodiode probably has some, maybe
visible, LED effect.
--
John Larkin Highland Technology, Inc
Science teaches us to doubt.
Claude Bernard