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hi
i want to connect a zener diode on the power supply pin of adc mcp3202. can anybody plz help me out for how to connet it. i am supplying 5 volts to adc.
do i need some resistance in series with diode or wht...plz help me out.
I'm using MCP3202 12-bit ADC. and if i use 10K i get a drop of 1.01 volts i'm unable to understand. on net i found one application of which i'm giving the link **broken link removed** can this provide any help. and how is the 2 zeners attached i mean the purpose?
thanks for the advise. but i tried using 1K resistor. but voltage dropped from 4.94volts to 4.37volts across the resistor. actually i'm running opamp on +12v and -12v and adc on +5v so i want to protect the adc in case high voltage comesup from opamp. do i need to use one more zener with +rail.
adc input current limiting
hi,
i have designed a very simple circuit. in which a small voltage from a sensor is givcen to OPAMP--->current limiting resistor (with a zener diode)---->ADC---->uC----->LCD, as shown in figure. But as i chnage the value of current limiting resistor the voltage...
watch dog timer
thanks amir but that is the function of watch dog timer i want to know the application also , where is this application implemented in the industries?
dear all
i want to make a true rms to dc converter to design a "True RMS AC voltmeter" in which the input voltage can be any type of signal like triangular,square or sine etc..and the output should be a dc voltage.i am sending the link of file in which there is a circuit of the rms to dc...
hi
thanks but i have ten displays and i cant go on using 10 latch ics in my project as it will increase my project cost. i want some simpler technique so that my system works well and is economical. i want software method.
hi,
i am designing a counter in which i'm using 7 segment displays connected to micrcontroller(a---g) and common anodes through bc557, my displays flicker a lot what can i do?
thnx for replying ianp but will this circuit take input as -10 to -30 volts or 10 to 30 volts and give output as 0-5 volts so that i can feed it to 8051.could u please exlain me the details of this ciruit as to how is it solving my purpose
hi frnz
i m designing a simple five digit counter which has the input sensor .the sensor is proximity sensor with either pnp or npn type output.
the range is from 10 v to 30 v for pnp or -10 to -30volts for npn.
now i have to feed this to 8051 .how to do this please help.
will be waiting...
dear frnz
i want to design a PID room temperature controller to control heater coil to maintain a fix temperature . i have to control the heater thru PWM .m new to all these things.m using pic16f876 .main problem is how to control a heater coil which is working on 220volts ac (1000Watts) thru...
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