Eric Fontaine ericfont
ericfont
/ circuit-20250625-0002.svg
Created
June 25, 2025 04:03
pmos+nmos to form 1:2 muxes (i.e. single-pole double-throw switches) for capacitor stacking...pmos gate must be -1.2v lower than source voltage
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ericfont
/ circuit-20250624-0322.svg
Created
June 24, 2025 07:23
capacitor stacking better attempt...at least works
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ericfont
/ circuit-20250623-1904.svg
Created
June 23, 2025 23:04
attempt at capacitor adding with nmos switches
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ericfont
/ circuit-20250622-1214.svg
Created
June 22, 2025 16:13
copy into ground-referenced capacitor
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ericfont
/ circuit-20250622-0330.svg
Created
June 22, 2025 07:30
saner, reduced switch method of getting voltages with both polarities for all powers-of-two
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ericfont
/ circuit-20250621-1640.svg
Created
June 21, 2025 20:40
switch-insanity-capacitor-voltage-summer-DAC
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ericfont
/ TL072_integrator-if-small-input_both-pos-and-neg-inputs.asc
Created
June 19, 2025 06:16
TL072_integrator-if-small-input_both-pos-and-neg-inputs.asc
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| Version 4.1 | |
| SHEET 1 1364 680 | |
| WIRE -64 -400 -640 -400 | |
| WIRE 32 -400 0 -400 | |
| WIRE 48 -400 32 -400 | |
| WIRE 144 -400 128 -400 | |
| WIRE -640 -336 -640 -400 | |
| WIRE 32 -240 32 -400 | |
| WIRE 48 -240 32 -240 | |
| WIRE -640 -224 -640 -256 |
ericfont
/ TL072_integrator-if-small-input_.asc
Created
June 19, 2025 06:04
can reverse input source pin
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| Version 4.1 | |
| SHEET 1 1364 680 | |
| WIRE -64 -400 -640 -400 | |
| WIRE 32 -400 0 -400 | |
| WIRE 48 -400 32 -400 | |
| WIRE 144 -400 128 -400 | |
| WIRE -640 -336 -640 -400 | |
| WIRE 32 -240 32 -400 | |
| WIRE 48 -240 32 -240 | |
| WIRE -640 -224 -640 -256 |
ericfont
/ TL072_integrator-if-small-input.asc
Created
June 19, 2025 03:21
real-opamp integrate small inputs
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| Version 4.1 | |
| SHEET 1 1364 680 | |
| WIRE 32 -400 0 -400 | |
| WIRE 48 -400 32 -400 | |
| WIRE 144 -400 128 -400 | |
| WIRE -464 -240 -624 -240 | |
| WIRE -240 -240 -304 -240 | |
| WIRE 32 -240 32 -400 | |
| WIRE 48 -240 32 -240 | |
| WIRE -624 -224 -624 -240 |
ericfont
/ oopamp-band-pass-integrate-low-pass_input-grounded_work-with-mcp6004-provided-low-vrefs-cause-slew-rate-limited.asc
Created
June 18, 2025 00:43
opamp-int-mcp6004-small-input-vrefs-ok
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| Version 4.1 | |
| SHEET 1 1364 680 | |
| WIRE 48 -400 32 -400 | |
| WIRE 144 -400 128 -400 | |
| WIRE -464 -240 -624 -240 | |
| WIRE 32 -240 32 -400 | |
| WIRE 32 -240 -400 -240 | |
| WIRE 48 -240 32 -240 | |
| WIRE -624 -224 -624 -240 | |
| WIRE 144 -224 144 -400 |
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