Current Sensing Circuit Using Lm324. I attached a circuit that provides a gain of 27 sensed from a 12v rail. The gain of the first stage is low 2 7 to get a good input common mode voltage.
Ic lm324 is quad operational amplifier. Which relies on ohm s law which states that v i x r. The current power and voltage ratings of any device indicates its power requirements i e.
The lm2902 lm124 lm224 lm324 series consists of four independent high gain internally frequency compensated operational amplifiers which diode digital thermometer circuit received by email 12 05 2009.
As shown in figure 8 this circuit can be used in some automatic control systems. Two yellow leds indicate that the temperature is higher than normal but not dangerous. The gain of the first stage is low 2 7 to get a good input common mode voltage. The lm2902 lm124 lm224 lm324 series consists of four independent high gain internally frequency compensated operational amplifiers which diode digital thermometer circuit received by email 12 05 2009.
