2 Watts from an old 2N3055 as a solarcell ?

[silverdragonrs]

sorry to reply to such an old topic but i had a question....

has anyone done this and tryed to figure out how long a solar cell (any kind) can survive under a magnifying lens? heatsink or not this is gonna be one hot puppy! I think perhaps the solar companies do not use magnification to prolong the life of the cell.

how come this topic died out i was just getting interested......

btw what part in the pics posted are the die? the small circut looking thing in the middle? (man that sounds ignorant )

thanks
danny

[silverdragonrs]

sorry.....

also..... how many 2n3055 cells would you need to use in order to create a matching voltage and ampers for say a car battery? most of the smaller devices in a house or car could be made to run on a seperate circut of solar cells to compliment what ever system you happen to be running. not to mention taking a solar power scource to the beach to run a small tv or radio or what ever. if one could create say a two foot panel of cells think it would work?

i entend to continue looking into this and develope a system farther...... (first step.... finding a good cheap/free scource of 2n3055 cells.....)


what kinds of devices are these 2n3055 things used in.... i can go check with some local stores and warehouses and manufacturers to see if they tos them out....


thanks again

danny

[therackals]

all transistors work as PV cells if the light not heat falls on the base connection ie saw off the top of the can. Electrical connections are then made to the collector and emitter. output varies with light.

[DeltaMan]

Gentlemen ,

I am wondering why you left Such a thread without any more input .

I just came from a friend's house . We took off the 'heads' of such transistors (even 2N3055) and we measured close to 0,3 Volts from One only transistor . And that was from Room Light ... !

The Current should be too low (less than 10 milliAmps)  because it would Not even start a Tiny motor . We are airmodellers and we have All kinds of motors ... 

Tomorrow I'll continue with experiments on the sunlight . There is Plenty of Sun here in Greece ... 

Even if they make 30 or 40 milliAmps (without Lens)  it IS a HUGE achievement .

Regards , DM

[lancaIV]

Probably an info source:

www.1000inventions.com    Technical field : Electricity : 862  : IBIYEMI

S
  dL