about circuit questions

Status
Not open for further replies.
A

aarviii

Newbie level 6
Joined
Apr 3, 2013
Messages
12
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Visit site
Activity points
1,355
is it possible to have a circuit using transistor as a switch that my input as a sensor is weight and output will be LED as light. and when i put the object to the sensor, the heavier object the more the LED will light? and one more question. what IC can i substitute to 3140?
 

All you need is a substance called pressure sensor and an opamp. Try an opamp non invertor. Make amplification some 10 time or 100.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…