Commit 74559e7a authored by Alex Shure's avatar Alex Shure

formatting

parent 2288ae81
......@@ -20,12 +20,12 @@ Needed for precise ADC measurements. 2.56V?
3. SMD/THT resistor. Inexpensive but rather large for a high current rating. No calibration needed.
4. Integrated hall effect sensor, e.g. Allegro ACS712. Good efficiency. High price. Sourcing and sinking will both be covered (still needs antiparallel MOSFETs though).
ADCs with integrated amps:
ADS1115: 16bit 4channel 8-800sps ADC with 16x PGA, i2c, differential mode
HX711: 24bit (less than 20bit usable) i2c ADC with amplifier, commonly used in weight scales
4. Integrated hall effect sensor, e.g. Allegro ACS712. Good efficiency. High price. Sourcing and sinking will both be covered (still needs antiparallel MOSFETs though).
### Voltage Sensing
Via high impedance voltage divider into ADC: input voltage, output voltage.
......@@ -48,7 +48,7 @@ Small OLED
## Faults and Errors
Overload: Hiccup pattern with recovery time depending on input voltage drop.
Short Circuit: Switch output off. Probe current for 1ms every 500ms. Activate output again if current is below threshhold. Needs a more sophisticated algorithm for plug-in events when input capacitors are charged, soft start could be implemented with PWM.
Polyfuse?
Diode over output against back-EMF.
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1. Overload: Hiccup pattern with recovery time depending on input voltage drop.
1. Short Circuit: Switch output off. Probe current for 1ms every 500ms. Activate output again if current is below threshhold. Needs a more sophisticated algorithm for plug-in events when input capacitors are charged, soft start could be implemented with PWM.
1. Polyfuse?
1. Diode over output against back-EMF.
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