dimensionfx
New Member
Hi,
I came accross this project which is supposed to enable transmission of voice over a light beam. The list of devices used:
Here is a list of the parts needed for this project
1-audio output transformer
1- 14k ohm resistor
1- 220k ohm resistor
2-1n914 diodes
2-2n3904 transistor
1-2n3906 transistor
1-microphone
1-8 ohm speaker
1-infrared led
1-photo transistor
1-1 Meg potentiometer
1-500k potentiometer
3-741 Op-amps
2-1 micro farad capacitors
1-10 micro farad capacitor
9-10k ohm resistors
2-470k ohm resistors
Anyway, what really baffled me was the circuit diagrams. There is one for the reciever and one for the transmitter.
- reciever circuit diag.
- transmitter circuit diag.
Judging from the components used and the circuit diagrams, is there anyway anyone could tell me some useful info such as the range of transmission, the average cost of the items to be used... and last but surely not least a small guide if possible on how to construct such a thing. (Would it work?> lol).
Please reply, I need this for a project for my school... any help gr8ly appreciated. Thanx!
I came accross this project which is supposed to enable transmission of voice over a light beam. The list of devices used:
Here is a list of the parts needed for this project
1-audio output transformer
1- 14k ohm resistor
1- 220k ohm resistor
2-1n914 diodes
2-2n3904 transistor
1-2n3906 transistor
1-microphone
1-8 ohm speaker
1-infrared led
1-photo transistor
1-1 Meg potentiometer
1-500k potentiometer
3-741 Op-amps
2-1 micro farad capacitors
1-10 micro farad capacitor
9-10k ohm resistors
2-470k ohm resistors
Anyway, what really baffled me was the circuit diagrams. There is one for the reciever and one for the transmitter.
Code:
http://ohmslaw.com/reciever.gif
Code:
http://ohmslaw.com/trans.gif
Judging from the components used and the circuit diagrams, is there anyway anyone could tell me some useful info such as the range of transmission, the average cost of the items to be used... and last but surely not least a small guide if possible on how to construct such a thing. (Would it work?> lol).
Please reply, I need this for a project for my school... any help gr8ly appreciated. Thanx!