|
This circuit is used to detect objects by reflected infrared light. It can be built into a cylindrical enclosure just like an inductive proximity switch. This is also useful as a level detector for colored liquids like oil. This has some immunity to ambient sunlight as it detects ac pulses. IC 555 is used as an astable [...] This circuit shows the voltage doubler working with a 555. LM555 has good drive 200mA, both Vcc and Gnd. LM555 – Timer LM555 Timer Circuits Voltage Multipliers Jochens High Voltage Page his Circuit converts a voltage control output from a Process Controller to be converted into a Current Control if the AC-Drive or Valve needs a Current Control Signal. This is a three wire voltage to current loop converter. The 1-5 V DC is attenuated and fed to pin 5 LM723 opamp section which tries to [...] |
|
|
Copyright © 2010 delabs Schematics - All Rights Reserved |
|