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I was going to say I used a LTC3803 design I copied from you...On Fri, 17 Jul 2020 12:40:52 -0700 (PDT), \"John Miles, KE5FX\"
jmiles@gmail.com> wrote:
On Friday, July 17, 2020 at 9:49:22 AM UTC-7, jla...@highlandsniptechnology.com wrote:
The application is eight isolated high-voltage pulse outputs. My first
idea was to use grounded drivers and final pulse transformers, but the
volt-seconds get huge so the pulse transformer would be awful. Better
to float the entire output circuit.
How about a C-W multiplier driven from an off-the-shelf boost regulator?
In other words, don\'t use use one diode and capacitor, use a string of them.
-- john, KE5FX
Something like this should work.
https://www.dropbox.com/s/5lkbvlwz7b4rb2h/Isol_Pulser_1.jpg?raw=1
Feedback into the LTC chip is interesting.
They want a working demo next week. Gotta warm up the Dremel.
--
John Larkin Highland Technology, Inc
Science teaches us to doubt.
Claude Bernard
I need eight isolated 150 volt DC supplies, low current, under 1 mA
average. Commercial dc/dc converters are crazy expensive:
I need eight isolated 150 volt DC supplies, low current, under 1 mA
average. Commercial dc/dc converters are crazy expensive:
I need eight isolated 150 volt DC supplies, low current, under 1 mA
average. Commercial dc/dc converters are crazy expensive:
The y caps is not just caring about approval. That is personal safety, only cap approved for bridging mains and SELV
Cheers
Klaus
On Fri, 17 Jul 2020 12:40:52 -0700 (PDT), \"John Miles, KE5FX\"
jmiles@gmail.com> wrote:
On Friday, July 17, 2020 at 9:49:22 AM UTC-7, jla...@highlandsniptechnology.com wrote:
The application is eight isolated high-voltage pulse outputs. My first
idea was to use grounded drivers and final pulse transformers, but the
volt-seconds get huge so the pulse transformer would be awful. Better
to float the entire output circuit.
How about a C-W multiplier driven from an off-the-shelf boost regulator?
In other words, don\'t use use one diode and capacitor, use a string of them.
-- john, KE5FX
Something like this should work.
https://www.dropbox.com/s/5lkbvlwz7b4rb2h/Isol_Pulser_1.jpg?raw=1
Feedback into the LTC chip is interesting.
They want a working demo next week. Gotta warm up the Dremel.
On Fri, 17 Jul 2020 12:40:52 -0700 (PDT), \"John Miles, KE5FX\"
jmiles@gmail.com> wrote:
On Friday, July 17, 2020 at 9:49:22 AM UTC-7, jla...@highlandsniptechnology.com wrote:
The application is eight isolated high-voltage pulse outputs. My first
idea was to use grounded drivers and final pulse transformers, but the
volt-seconds get huge so the pulse transformer would be awful. Better
to float the entire output circuit.
How about a C-W multiplier driven from an off-the-shelf boost regulator?
In other words, don\'t use use one diode and capacitor, use a string of them.
-- john, KE5FX
Something like this should work.
https://www.dropbox.com/s/5lkbvlwz7b4rb2h/Isol_Pulser_1.jpg?raw=1
Feedback into the LTC chip is interesting.
They want a working demo next week. Gotta warm up the Dremel.
On Fri, 17 Jul 2020 12:40:52 -0700 (PDT), \"John Miles, KE5FX\"
jmiles@gmail.com> wrote:
On Friday, July 17, 2020 at 9:49:22 AM UTC-7, jla...@highlandsniptechnology.com wrote:
The application is eight isolated high-voltage pulse outputs. My first
idea was to use grounded drivers and final pulse transformers, but the
volt-seconds get huge so the pulse transformer would be awful. Better
to float the entire output circuit.
How about a C-W multiplier driven from an off-the-shelf boost regulator?
In other words, don\'t use use one diode and capacitor, use a string of them.
-- john, KE5FX
Something like this should work.
https://www.dropbox.com/s/5lkbvlwz7b4rb2h/Isol_Pulser_1.jpg?raw=1
Feedback into the LTC chip is interesting.
They want a working demo next week. Gotta warm up the Dremel.
On 7/17/2020 4:30 PM, jlarkin@highlandsniptechnology.com wrote:
On Fri, 17 Jul 2020 12:40:52 -0700 (PDT), \"John Miles, KE5FX\"
jmiles@gmail.com> wrote:
On Friday, July 17, 2020 at 9:49:22 AM UTC-7,
jla...@highlandsniptechnology.com wrote:
The application is eight isolated high-voltage pulse outputs. My first
idea was to use grounded drivers and final pulse transformers, but the
volt-seconds get huge so the pulse transformer would be awful. Better
to float the entire output circuit.
How about a C-W multiplier driven from an off-the-shelf boost regulator?
In other words, don\'t use use one diode and capacitor, use a string
of them.
-- john, KE5FX
Something like this should work.
https://www.dropbox.com/s/5lkbvlwz7b4rb2h/Isol_Pulser_1.jpg?raw=1
Feedback into the LTC chip is interesting.
They want a working demo next week. Gotta warm up the Dremel.
I made a EL panel driver good for a couple watts using a similar
topology it works very well, 12V to about ~150 V DC into an HV809.
https://www.microchip.com/wwwproducts/en/HV809
The y caps is not just caring about approval. That is personal safety, only cap approved for bridging mains and SELV
Cheers
Klaus
On Friday, July 17, 2020 at 4:30:14 PM UTC-4, jla...@highlandsniptechnology.com wrote:
On Fri, 17 Jul 2020 12:40:52 -0700 (PDT), \"John Miles, KE5FX\"
jmiles@gmail.com> wrote:
On Friday, July 17, 2020 at 9:49:22 AM UTC-7, jla...@highlandsniptechnology.com wrote:
The application is eight isolated high-voltage pulse outputs. My first
idea was to use grounded drivers and final pulse transformers, but the
volt-seconds get huge so the pulse transformer would be awful. Better
to float the entire output circuit.
How about a C-W multiplier driven from an off-the-shelf boost regulator?
In other words, don\'t use use one diode and capacitor, use a string of them.
-- john, KE5FX
Something like this should work.
https://www.dropbox.com/s/5lkbvlwz7b4rb2h/Isol_Pulser_1.jpg?raw=1
Feedback into the LTC chip is interesting.
They want a working demo next week. Gotta warm up the Dremel.
I was going to say I used a LTC3803 design I copied from you...
or someone else here.
George H.
On Friday, July 17, 2020 at 4:30:14 PM UTC-4, jla...@highlandsniptechnology.com wrote:
On Fri, 17 Jul 2020 12:40:52 -0700 (PDT), \"John Miles, KE5FX\"
jmiles@gmail.com> wrote:
On Friday, July 17, 2020 at 9:49:22 AM UTC-7, jla...@highlandsniptechnology.com wrote:
The application is eight isolated high-voltage pulse outputs. My first
idea was to use grounded drivers and final pulse transformers, but the
volt-seconds get huge so the pulse transformer would be awful. Better
to float the entire output circuit.
How about a C-W multiplier driven from an off-the-shelf boost regulator?
In other words, don\'t use use one diode and capacitor, use a string of them.
-- john, KE5FX
Something like this should work.
https://www.dropbox.com/s/5lkbvlwz7b4rb2h/Isol_Pulser_1.jpg?raw=1
Feedback into the LTC chip is interesting.
They want a working demo next week. Gotta warm up the Dremel.
I was going to say I used a LTC3803 design I copied from you...
or someone else here.
George H.
On Fri, 17 Jul 2020 12:40:52 -0700 (PDT), \"John Miles, KE5FX\"
jmiles@gmail.com> wrote:
On Friday, July 17, 2020 at 9:49:22 AM UTC-7, jla...@highlandsniptechnology.com wrote:
The application is eight isolated high-voltage pulse outputs. My first
idea was to use grounded drivers and final pulse transformers, but the
volt-seconds get huge so the pulse transformer would be awful. Better
to float the entire output circuit.
How about a C-W multiplier driven from an off-the-shelf boost regulator?
In other words, don\'t use use one diode and capacitor, use a string of them.
-- john, KE5FX
Something like this should work.
https://www.dropbox.com/s/5lkbvlwz7b4rb2h/Isol_Pulser_1.jpg?raw=1
Feedback into the LTC chip is interesting.
They want a working demo next week. Gotta warm up the Dremel.
jlarkin@highlandsniptechnology.com wrote:
I need eight isolated 150 volt DC supplies, low current, under 1 mA
average. Commercial dc/dc converters are crazy expensive:
If each channel needs some degree of control, the ultimate low-cost
solution looks like this thing:
https://www.ti.com/lit/ds/symlink/tpic6c595.pdf
Strobe G, load whatever you want to SER IN. One of my faves; works like
a charm.
If no control is needed, use 8 MOSFETs fed with the same 50% waveform,
then use each of them as the switch driving a forward/flyback
transformer, whatever you like, and burn excessive power in a zener.
Best regards, Piotr
jlarkin@highlandsniptechnology.com wrote:
I need eight isolated 150 volt DC supplies, low current, under 1 mA
average. Commercial dc/dc converters are crazy expensive:
If each channel needs some degree of control, the ultimate low-cost
solution looks like this thing:
https://www.ti.com/lit/ds/symlink/tpic6c595.pdf
Strobe G, load whatever you want to SER IN. One of my faves; works like
a charm.
If no control is needed, use 8 MOSFETs fed with the same 50% waveform,
then use each of them as the switch driving a forward/flyback
transformer, whatever you like, and burn excessive power in a zener.
Best regards, Piotr
jlarkin@highlandsniptechnology.com wrote:
I need eight isolated 150 volt DC supplies, low current, under 1 mA
average. Commercial dc/dc converters are crazy expensive:
If each channel needs some degree of control, the ultimate low-cost
solution looks like this thing:
https://www.ti.com/lit/ds/symlink/tpic6c595.pdf
Strobe G, load whatever you want to SER IN. One of my faves; works like
a charm.
If no control is needed, use 8 MOSFETs fed with the same 50% waveform,
then use each of them as the switch driving a forward/flyback
transformer, whatever you like, and burn excessive power in a zener.
Best regards, Piotr
On Fri, 17 Jul 2020 22:42:44 +0200, Piotr Wyderski
peter.pan@neverland.mil> wrote:
jlarkin@highlandsniptechnology.com wrote:
I need eight isolated 150 volt DC supplies, low current, under 1 mA
average. Commercial dc/dc converters are crazy expensive:
If each channel needs some degree of control, the ultimate low-cost
solution looks like this thing:
https://www.ti.com/lit/ds/symlink/tpic6c595.pdf
Strobe G, load whatever you want to SER IN. One of my faves; works like
a charm.
If no control is needed, use 8 MOSFETs fed with the same 50% waveform,
then use each of them as the switch driving a forward/flyback
transformer, whatever you like, and burn excessive power in a zener.
Best regards, Piotr
We use a ton of TPIC6595, a simlar part, as our universal relay and
LED driver. But I don\'t need independent control, and there will be no
uP or FPGA or anything. It\'s refreshing to design an all-analog box
once in a while.
I think one big fet can drive all 8 flyback transformers.