04-04-2015, 05:29 PM
Ja mislim da kad su projektovali pločicu oni su prilagodili šemu odabranim komponentama, tako da treba uzeti 336 2,5 i trimer 5k.
Našao sam:
Bogdan Kecman
March 24, 2013
Ako ne mozes da ga namestis na 1mA ili ti ne valja ona voltage referenca ili ti ne valja CAL potenciometar.
dakle iz originalnog teksta:
Calibration, D1 is voltage reference diode, depending on diode you are using chose the CAL1 pot (basically you need to have resistor there that is similar to reference voltage of LM385 so if you use LM385 with 1.24V reference use 2k pot so you can easily find 1k24 position, or if you use 2.5V reference then 5k pot will be easiest). To calibrate device initially, disconnect sensor and instead sensor connect milliampermeter. Turn the CAL1 until you have 1mA flowing trough PTC1/PTC2
Dakle u zavisnosti od toga koji si voltage reference uzeo treba ti razlicit pot. Nadam se da nisi uzeo voltage reference od 5V posto nisam siguran da sa njim mozes da napravis to da radi ok.
Našao sam:
Bogdan Kecman
March 24, 2013
Ako ne mozes da ga namestis na 1mA ili ti ne valja ona voltage referenca ili ti ne valja CAL potenciometar.
dakle iz originalnog teksta:
Calibration, D1 is voltage reference diode, depending on diode you are using chose the CAL1 pot (basically you need to have resistor there that is similar to reference voltage of LM385 so if you use LM385 with 1.24V reference use 2k pot so you can easily find 1k24 position, or if you use 2.5V reference then 5k pot will be easiest). To calibrate device initially, disconnect sensor and instead sensor connect milliampermeter. Turn the CAL1 until you have 1mA flowing trough PTC1/PTC2
Dakle u zavisnosti od toga koji si voltage reference uzeo treba ti razlicit pot. Nadam se da nisi uzeo voltage reference od 5V posto nisam siguran da sa njim mozes da napravis to da radi ok.