small computers
What is the role of resistors in computers, radios and other small appliances ?
To put it simply, they just serve as on/off switches right ?
Just hoping someone could go a little more in depth on it please ?
Thank you !
Resistors limit current, set current values, divide voltages, change their value to ensure stability as temperature changes, set bias points for amplifiers and other circuits. Yes, they can even serve as on/off switches by setting control points for semiconductor switches like thyristors, but for sure they provide a lot more services than that.
Just for your reference and browsing, resistors are essential in all these links:
http://www.discovercircuits.com/T/transistor.htm
http://www.google.com/search?hl=en&client=firefox&hs=OCT&rls=com.yahoo%3Aen-US%3Aofficial&q=small+circuit+resistor+applications&aq=f&aqi=&aql=&oq=&gs_rfai=
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Pupatello touts small business
Small businesses could grow by two to three per cent if they invested more in technology, Ontario Minister of Economic Development and Trade Sandra Pupatello told business leaders this morning in Mississauga.
