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Update HVAMP32 according to the factual specs #155

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static/js/shop_data.js
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@ -877,23 +877,14 @@ const shop_data = {
price: 1500, price: 1500,
image: '/images/shop/graphic-03_HVAMP32.svg', image: '/images/shop/graphic-03_HVAMP32.svg',
specs: [ specs: [
'Amplifier: LTC6090 or OPA462, 32 channels.', 'Amplifier: LTC6090, 32 channels.',
'Amplification range up to ±25V and ±55V available.', 'Amplification range: ±50V.',
sb10q commented 2024-10-10 22:14:36 +08:00
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Are there really 50V and 55V variants? @morgan

Are there really 50V and 55V variants? @morgan
morgan commented 2024-10-14 10:05:06 +08:00
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Yes, from the latest release of HVAMP_32 v1.02rc there are 50V and 55V variant schematics. And the difference between them are the OP amp gain circuit (5x -> 5.5x gain) and the LDO resistive divider (HVout = ±56V -> ±57V).

Yes, from the latest release of HVAMP_32 [v1.02rc](https://github.com/sinara-hw/HVAMP_32/releases/tag/v1.02rc1) there are 50V and 55V variant schematics. And the difference between them are the OP amp gain circuit (5x -> 5.5x gain) and the LDO resistive divider (HVout = ±56V -> ±57V).
sb10q commented 2024-10-14 10:05:44 +08:00
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That doesn't make a lot of sense, please check with Greg.

That doesn't make a lot of sense, please check with Greg.
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morgan commented 2024-10-18 16:59:08 +08:00
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Greg just replied, saying the latest v1.02 is a completely new design and the ±50V variant is indeed the standard variant. Also, they never produced the ±25V variant of v1.02. But he mentioned a way to convert existing v1.02 PCB to be ±25V variant.

""
For +/-25V you need to modify R1 to 30k*2.5
And R20/R35 to get +/- 28V supply
Also IC12/IC14 need to be removed and shorted by 0R resistors (R21,R25,R6,R8) because we would need +/-30V instead of+/- 60V
""

Greg just replied, saying the latest v1.02 is a completely new design and the ±50V variant is indeed the standard variant. Also, they never produced the ±25V variant of v1.02. But he mentioned a way to convert existing v1.02 PCB to be ±25V variant. "" For +/-25V you need to modify R1 to 30k*2.5 And R20/R35 to get +/- 28V supply Also IC12/IC14 need to be removed and shorted by 0R resistors (R21,R25,R6,R8) because we would need +/-30V instead of+/- 60V ""
sb10q commented 2024-10-18 17:26:13 +08:00
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OK then let's just mention the +-50V variant only.

OK then let's just mention the +-50V variant only.
'Over-temperature protection.', 'Over-temperature protection.',
'External 12V power supply.', 'External 12V power supply.',
'Slew rate 21V/us typical.', 'Slew rate 21V/us typical.',
'Bandwidth: 12MHz/gain, for ±25V range BW is 4.8MHz typical.', 'Bandwidth: 12MHz/gain, 2.4MHz typical.',
'The same connector as in Zotino and Fastino.' 'The same connector as in Zotino and Fastino.'
], ],
options: [
{type: "Radio",
args: {
title: "Amplification range",
outvar: "hvamp",
variants: ["±25V", "±55V"],
fallback: 0
}},
],
size: 'small', size: 'small',
warnings: [ warnings: [
"no_idc_source" "no_idc_source"