Describe some of the uses of diodes in analogue and digital circuits.?

Question

Need help urgently please

Answer 1

Analogue..rectifiers ..either half wave (single diode) or full wave (diode bridge). Zener diodes used as voltage clamps/regulators for rectified smoothed power supplies. Back/reverse polarity protection for circuit boards

Digital..simple on/off indicators (eg for power supply) 7 seg displays

Analogue/digital in LED/therm mode as input transducer 4 voltage divider connect 2 A/D converter to allow computer with interface to measure light intensity/temperature...

Answer 2

Let's start with WHAT (a diode is)....

Allows electricity to "flow" one way only...SEE...

http://www.powerdesigners.com/InfoWeb/de...

Move to WHAT (a diode does)...

http://www.interq.or.jp/japan/se-inoue/e...

Some applications:

http://www.technologystudent.com/elec1/d...

and a few more...

http://www.ece.utah.edu/~ece2280/L4Diode...

-Fred

Answer 3

the only use i can think of for an analogue circuit would be a specific diode... a ZENER diode,

it's function is to be placed in reverse bias into the circuit, and the voltage that gets dropped across it is outputted to be a stable voltage,

for example analogue circuits with voltages fluctuating between say 5v to 10v, you may place a zener diode into the circuit and allow for a steady 4 volts to be outputted, instead of fluctuating between 5 and 10