I've read many articles on transistors 2 get a solid concept, but the more i read, the more confused i get. So here r a few newbie question which i'd b happy if u'd answer:
1. Talking in terms of conventional current, in a PNP bipolar juntion transistor why doesn't the collector current get out thru the base since the base has lower potential, and instead goes thru the emitter?
2. Why is it said dat the magnitude of current thru the emitter-collector depends on base current and not base voltage (i though and I r interrelated?? OK i know transistors dont obey Ohms law, but its better if u xplained a bit )
3. Do i need a resistor b4 the base if the current is low?
4. In 1 article ( http://www.williamson-labs.com/480_xtor.htm) its said:
Thanx
Thats all 4 now. I'll add more when they come into my mind.
1. Talking in terms of conventional current, in a PNP bipolar juntion transistor why doesn't the collector current get out thru the base since the base has lower potential, and instead goes thru the emitter?
2. Why is it said dat the magnitude of current thru the emitter-collector depends on base current and not base voltage (i though and I r interrelated?? OK i know transistors dont obey Ohms law, but its better if u xplained a bit )
3. Do i need a resistor b4 the base if the current is low?
4. In 1 article ( http://www.williamson-labs.com/480_xtor.htm) its said:
Wats that supposed 2 mean?Voltage to Current Convertor
First, you must convert the input voltage to a current by using a Voltage to Current Convertor--a resistor.
Current to Voltage Convertor
Next, you convert the output current into a voltage by using a Current to Voltage Convertor in the collector circuit--you guessed it--a resistor.
Thanx
Thats all 4 now. I'll add more when they come into my mind.