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What is the minimum forward current If for single colour LEDs?
What is the forward voltage drop of single colour Red LED?
What is the typical forward voltage drop of the RED colour LED?
What is the maximum reverse voltage that can be applied across the general purpose LED?
What is the typical forward voltage drop of the yellow colour LED
Which material is used to make LDR for higher end requirements?
What is the range of photo current for photo transistor BPX 38?
What is the type of transistor BPX81?
What is the function of opto-coupler in the switching operation of digital input signal?
What is the forward voltage for the single colour orange LEDs?
Which material is used to make LDR for lower end requirements?
Which circuit photo SCR opto couplers are used?
Which circuit uses photo-darlington devices?
What is the advantage of PIN photo diodes?
Which of the device is opto-coupled TRIACS?
Which is the combination of photo transistor?
What is the advantage of photo transistors over photo diodes?
What is the use of photo transistor?
What is the drawbacks of LDR?
Which material is used to make photo resistors (LDR)?
What is the main application of photo resistor?
Which purpose the cadmium sulfide cells (CDS cells) are used?
How the light sensitive photo transistor enclosed inside a tight package is activated?
Which measuring instrument is used to check the working condition of a photo resistor (LDR)? |
Which electronic device inversely changes its resistance with the amount of light falling on it?
What will happen if the photo resistor (LDR) is exposed to low level light condition?
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