> John Larkin wrote:
>> On Wed, 03 Aug 2022 11:42:45 +0200, Johann Klammer
>> <klammerj@NOSPAM.a1.net> wrote:
>>
>>> On 08/01/2022 03:11 AM, amdx wrote:
>>>> Ya, I had it for a while played with it had fun with it, I did some
>>>> circuits, went out and got subcircuits, all was cool and as I recall
>>>> I was
>>>> trying to show how match was important to power transfer nothing
>>>> major just maximum power transfer, I posted it here
>>>> got a shit load of flack, was told I need to learn electronics
>>>> before I try LT spice. I just said Fuck it. Haven't touched it since.
>>>> Mikek
>>>>
>>>>
>>> The thing when posting to usenset is that you should never ever read
>>> any of the replies.
>>
>> Like the famous Signetics WOM ic, the write-only memory.
>>
>> 100% production yield.
>>
>> Of course, you won't see this.
>>
>
> The plot of "pins remaining vs. socket insertions" is a classic in itself.
>
> On Wed, 03 Aug 2022 11:42:45 +0200, Johann Klammer
> <klammerj@NOSPAM.a1.net> wrote:
>
>> On 08/01/2022 03:11 AM, amdx wrote:
>>> Ya, I had it for a while played with it had fun with it, I did some circuits, went out and got subcircuits, all was cool and as I recall I was
>>> trying to show how match was important to power transfer nothing major just maximum power transfer, I posted it here
>>> got a shit load of flack, was told I need to learn electronics before I try LT spice. I just said Fuck it. Haven't touched it since.
>>> Mikek
>>>
>>>
>> The thing when posting to usenset is that you should never ever read any of the replies.
>
> Like the famous Signetics WOM ic, the write-only memory.
>
> 100% production yield.
>
> Of course, you won't see this.
>
The plot of "pins remaining vs. socket insertions" is a classic in itself.
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 John Larkin●August 3, 20222022-08-03
On Wed, 03 Aug 2022 11:42:45 +0200, Johann Klammer
<klammerj@NOSPAM.a1.net> wrote:
>On 08/01/2022 03:11 AM, amdx wrote:
>> Ya, I had it for a while played with it had fun with it, I did some circuits, went out and got subcircuits, all was cool and as I recall I was
>> trying to show how match was important to power transfer nothing major just maximum power transfer, I posted it here
>> got a shit load of flack, was told I need to learn electronics before I try LT spice. I just said Fuck it. Haven't touched it since.
>> Mikek
>>
>>
>The thing when posting to usenset is that you should never ever read any of the replies.
Like the famous Signetics WOM ic, the write-only memory.
100% production yield.
Of course, you won't see this.
Reply by amdx●August 3, 20222022-08-03
On 8/3/2022 4:42 AM, Johann Klammer wrote:
> On 08/01/2022 03:11 AM, amdx wrote:
>> Ya, I had it for a while played with it had fun with it, I did some circuits, went out and got subcircuits, all was cool and as I recall I was
>> trying to show how match was important to power transfer nothing major just maximum power transfer, I posted it here
>> got a shit load of flack, was told I need to learn electronics before I try LT spice. I just said Fuck it. Haven't touched it since.
>> Mikek
>>
>>
> The thing when posting to usenset is that you should never ever read any of the replies.
Yep, but still I read this.
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Reply by Johann Klammer●August 3, 20222022-08-03
On 08/01/2022 03:11 AM, amdx wrote:
> Ya, I had it for a while played with it had fun with it, I did some circuits, went out and got subcircuits, all was cool and as I recall I was
> trying to show how match was important to power transfer nothing major just maximum power transfer, I posted it here
> got a shit load of flack, was told I need to learn electronics before I try LT spice. I just said Fuck it. Haven't touched it since.
> Mikek
>
>
The thing when posting to usenset is that you should never ever read any of the replies.
Reply by Ricky●August 2, 20222022-08-02
On Tuesday, August 2, 2022 at 1:05:00 PM UTC-4, amdx wrote:
> On 8/2/2022 7:36 AM, Ricky wrote:
> > On Sunday, July 31, 2022 at 8:54:55 PM UTC-4, amdx wrote:
> >> On 7/31/2022 2:58 PM, jla...@highlandsniptechnology.com wrote:
> >>> On Sun, 31 Jul 2022 10:56:27 -0500, amdx <am...@knology.net> wrote:
> >>>
> >>>> I'd like to setup a high Q LC to receive a local Radio station probably
> >>>> charging a cap, when the charge is high enough flash an LED.
> >>>> Maybe set the trigger point of an SCR, or could just a zener do it. I
> >>>> don't have LT spice, so please don't post and answer with that.
> >>>>
> >>>> Thanks, Mikek
> >>> I expect that a strong radio station could light an LED visibly
> >>> continuously, given a good well-matched antenna. Or charge a cap and
> >>> use a discharge circuit to get bright blinks.
> >>>
> >>> Here's my high-voltage low current blinker:
> >>>
> >>> https://www.dropbox.com/sh/yaqbi52vbpo6uyc/AABPAczwj1zv26-fwI4LvJyha?dl=0
> >>>
> >>> But LT Spice is free, easy to learn, and a wonderful tool for stuff
> >>> like this.
> >>>
> >> I was hoping to do it with just a coil and cap. I have some 6" coils with
> >> Q over 1000. Very high impedance a resonance, so might need a lower
> >> impedance pickup coil.
> >> Their Litz wire, so I don't want to tap them.
> > A high-Q circuit is going to be useless in this application, because you need to draw power which will spoil the Q of any high-Q circuit. The only use of a high-Q circuit would be for tuning, but with the power you are drawing off, it won't be high-Q anymore, just a tuned circuit.
> >
> >
> Someone can LT spice that and compare a 1200 Q LC to a 200 Q LC.
> Show I'm
> right! Or wrong.
You might try LTspice with this file. It seems to contain descriptions for all the parts. So you won't have to learn how to incorporate models which can be a clumsy part of the job.
I seem to recall, the basic parts like L and C will include a tiny bit of R by default because the simulations can go wonky when the Q is infinite. So you will need to adjust those parasitic values to set your Q. I expect you know how to do that.
--
Rick C.
-- Get 1,000 miles of free Supercharging
-- Tesla referral code - https://ts.la/richard11209
Reply by amdx●August 2, 20222022-08-02
On 8/2/2022 7:36 AM, Ricky wrote:
> On Sunday, July 31, 2022 at 8:54:55 PM UTC-4, amdx wrote:
>> On 7/31/2022 2:58 PM, jla...@highlandsniptechnology.com wrote:
>>> On Sun, 31 Jul 2022 10:56:27 -0500, amdx <am...@knology.net> wrote:
>>>
>>>> I'd like to setup a high Q LC to receive a local Radio station probably
>>>> charging a cap, when the charge is high enough flash an LED.
>>>> Maybe set the trigger point of an SCR, or could just a zener do it. I
>>>> don't have LT spice, so please don't post and answer with that.
>>>>
>>>> Thanks, Mikek
>>> I expect that a strong radio station could light an LED visibly
>>> continuously, given a good well-matched antenna. Or charge a cap and
>>> use a discharge circuit to get bright blinks.
>>>
>>> Here's my high-voltage low current blinker:
>>>
>>> https://www.dropbox.com/sh/yaqbi52vbpo6uyc/AABPAczwj1zv26-fwI4LvJyha?dl=0
>>>
>>> But LT Spice is free, easy to learn, and a wonderful tool for stuff
>>> like this.
>>>
>> I was hoping to do it with just a coil and cap. I have some 6" coils with
>> Q over 1000. Very high impedance a resonance, so might need a lower
>> impedance pickup coil.
>> Their Litz wire, so I don't want to tap them.
> A high-Q circuit is going to be useless in this application, because you need to draw power which will spoil the Q of any high-Q circuit. The only use of a high-Q circuit would be for tuning, but with the power you are drawing off, it won't be high-Q anymore, just a tuned circuit.
>
>
Someone can LT spice that and compare a 1200 Q LC to a 200 Q LC.
Show I'm
right! Or wrong.
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Reply by Mike Monett●August 2, 20222022-08-02
Martin Brown <'''newspam'''@nonad.co.uk> wrote:
[...]
> I vaguely recall an ancient bipolar transistor low leakage thyristor
> functional equivalent that could be used to flash an LED brightly but
> very slowly depending on charging of a low leakage reservoir capacitor.
> It snapped into conduction when the voltage reached about 4v.
> It was briefly in vogue for flashing them in the early red LED era just
> prior to UJTs becoming common and cheap.
I vaguely recall the same thing. I tried to reconstruct it, but only got
one snap and then it hung. I searched through analogspiceman's files and
couldn't find anything. But it's out there somewhere. Here's my offering:
Version 4
SHEET 1 1608 1700
WIRE 352 -304 304 -304
WIRE 464 -304 432 -304
WIRE 512 -304 464 -304
WIRE 608 -304 512 -304
WIRE 304 -288 304 -304
WIRE 608 -272 608 -304
WIRE 464 -240 464 -304
WIRE 304 -192 304 -208
WIRE 608 -192 608 -208
WIRE 400 -112 400 -192
WIRE 464 -64 464 -144
WIRE 400 0 400 -16
FLAG 304 -192 0
FLAG 400 0 0
FLAG 608 -192 0
FLAG 512 -304 Q2E
SYMBOL voltage 304 -304 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL npn 464 -112 M0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL pnp 400 -144 M180
WINDOW 0 43 35 Left 2
WINDOW 3 39 62 Left 2
SYMATTR InstName Q2
SYMATTR Value 2N3906
SYMBOL res 448 -320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL cap 592 -272 R0
SYMATTR InstName C1
SYMATTR Value 1uf
TEXT 376 -424 Left 2 ;'2N3904/06 SCR
TEXT 376 -392 Left 2 !.tran 0 10m 0
TEXT 576 -392 Left 2 !.options plotwinsize=0
--
MRM
Reply by ●August 2, 20222022-08-02
On Tue, 02 Aug 2022 15:11:10 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
>> On Sunday, July 31, 2022 at 9:12:02 PM UTC-4, amdx wrote:
>>> On 7/31/2022 7:35 PM, boB wrote:
>>>> On Mon, 01 Aug 2022 03:13:19 +0300, Klaus Kragelund
>>>> <klau...@hotmail.com> wrote:
>>>>
>>>>> 31.07.22 22:58, jla...@highlandsniptechnology.com wrote:
>>>>>> On Sun, 31 Jul 2022 10:56:27 -0500, amdx <am...@knology.net> wrote:
>>>>>>
>>>>>>> I'd like to setup a high Q LC to receive a local Radio station probably
>>>>>>> charging a cap, when the charge is high enough flash an LED.
>>>>>>> Maybe set the trigger point of an SCR, or could just a zener do it. I
>>>>>>> don't have LT spice, so please don't post and answer with that.
>>>>>>>
>>>>>>> Thanks, Mikek
>>>>>> I expect that a strong radio station could light an LED visibly
>>>>>> continuously, given a good well-matched antenna. Or charge a cap and
>>>>>> use a discharge circuit to get bright blinks.
>>>>>>
>>>>>> Here's my high-voltage low current blinker:
>>>>>>
>>>>>> https://www.dropbox.com/sh/yaqbi52vbpo6uyc/AABPAczwj1zv26-fwI4LvJyha?dl=0
>>>>>>
>>>>>> But LT Spice is free, easy to learn, and a wonderful tool for stuff
>>>>>> like this.
>>>>>>
>>>>> Tuned LC with diode to big low leakage cap
>>>>>
>>>>> Then a BJT multivibrator, can operate in nA
>>>>> Assign very low duty cycle for LED
>>>>
>>>> Yes, I was thinking an L-C circuit to boost the voltage at least.
>>>>
>>>> LTspice can be downloaded for free from www.analog.com
>>>>
>>>> I suggest you get it.
>>>>
>>>> boB
>>>>
>>> Ya, I had it for a while played with it had fun with it, I did some
>>> circuits, went out and got subcircuits, all was cool and as I recall I was
>>> trying to show how match was important to power transfer nothing major
>>> just maximum power transfer, I posted it here
>>> got a shit load of flack, was told I need to learn electronics before I
>>> try LT spice. I just said Fuck it. Haven't touched it since.
>
>It's a bit of a pity that you let the opinions of others deprive you
>of a useful tool. Spice has its quirks, but it can help a lot, once
>you get the hang of it.
I have got people started on LT Spice, entering and running a basic
circuit, in 5 minutes.
I often use it instead of a calculator, for simple stuff like voltage
dividers and rc circuits. Unlike a calculator, it leaves a record.
>
>Don't try to use it to simulate complete complex circuits.
> On Sunday, July 31, 2022 at 9:12:02 PM UTC-4, amdx wrote:
>> On 7/31/2022 7:35 PM, boB wrote:
>>> On Mon, 01 Aug 2022 03:13:19 +0300, Klaus Kragelund
>>> <klau...@hotmail.com> wrote:
>>>
>>>> 31.07.22 22:58, jla...@highlandsniptechnology.com wrote:
>>>>> On Sun, 31 Jul 2022 10:56:27 -0500, amdx <am...@knology.net> wrote:
>>>>>
>>>>>> I'd like to setup a high Q LC to receive a local Radio station probably
>>>>>> charging a cap, when the charge is high enough flash an LED.
>>>>>> Maybe set the trigger point of an SCR, or could just a zener do it. I
>>>>>> don't have LT spice, so please don't post and answer with that.
>>>>>>
>>>>>> Thanks, Mikek
>>>>> I expect that a strong radio station could light an LED visibly
>>>>> continuously, given a good well-matched antenna. Or charge a cap and
>>>>> use a discharge circuit to get bright blinks.
>>>>>
>>>>> Here's my high-voltage low current blinker:
>>>>>
>>>>> https://www.dropbox.com/sh/yaqbi52vbpo6uyc/AABPAczwj1zv26-fwI4LvJyha?dl=0
>>>>>
>>>>> But LT Spice is free, easy to learn, and a wonderful tool for stuff
>>>>> like this.
>>>>>
>>>> Tuned LC with diode to big low leakage cap
>>>>
>>>> Then a BJT multivibrator, can operate in nA
>>>> Assign very low duty cycle for LED
>>>
>>> Yes, I was thinking an L-C circuit to boost the voltage at least.
>>>
>>> LTspice can be downloaded for free from www.analog.com
>>>
>>> I suggest you get it.
>>>
>>> boB
>>>
>> Ya, I had it for a while played with it had fun with it, I did some
>> circuits, went out and got subcircuits, all was cool and as I recall I was
>> trying to show how match was important to power transfer nothing major
>> just maximum power transfer, I posted it here
>> got a shit load of flack, was told I need to learn electronics before I
>> try LT spice. I just said Fuck it. Haven't touched it since.
It's a bit of a pity that you let the opinions of others deprive you
of a useful tool. Spice has its quirks, but it can help a lot, once
you get the hang of it.
Don't try to use it to simulate complete complex circuits.
Jeroen Belleman