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Hi I have the same problem as you i am using the Orcad 9.1 release and without the footprint library manual its imposible to get anywhere. i have looked everywhere on the web and haven't yet found a downloadable version. if you have found a solution to the problem please let me know. you can...

yes BrianG i think i made myself unclear and you are right i am not looking for isolation i want detection. first i wanted to build a simple circuit to make sure that either a photodiode or phototransistor are working correctly maybe if i make it drive an LED to start with so i can see the...

I am trying to design a circuit using an optocoupler that would sense a light source and give an output which could be used to drive a DC motor. can anyone help with the circuit design for the optocoupler, i would probably use a photo diode has any one got ideas of a simple circuit how i can...

Has anyone got any idea how to write to an EEPROM using a PIC microcontroller 16F877 seies, using C language

Thanks a lot Buzzp you have been a great help, the sensor i am making is for a project and it is not too critical where the noise is concerned, all i want to do is be able to detect the current from its magnetic field and look at the corresponding voltage output on an Ammeter or scope. and from...

Hi Buzzp Well I think i made myself unclear what i was trying to do. I am using the hall effect sensor to measure current in a conductor by using a splittable ferrite core that will clamp around the wire. the sensor will be mounted in the air gap and the signal needs to be amplified. I needed...

yes thats true but each nand gate consists of four transistors, giving a total of 16. my task is to find the minimum acheivable and I have already found a six gate one, i just need the cell structure diagram.

Hi i have a task to build an exclusive or function using the minimum number of gates. I have found out that this can be acheived using 6 nmos & pmos gates. i need a design of the cell structure for a VLSI circuit. any help would be appreciated.

Hi can anyone help me with the design of an instrumentation amplifier. it is needed to amplify a signal comming from a Hall Effect sensor, I need tips on isolation and circuit design.