-25%

L.D.R to make a vactrol or teremin

Vorige Item 22 of 48 Volgende
€ 0,60 € 0,45 (including 21% VAT)

LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the resistance

of an LDR is very high, sometimes as high as 1000 000 ohms,

but when they are illuminated with light resistance drops dramatically.

 

LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the resistance of an LDR is very high, sometimes as high as 1000 000 ohms, but when they are illuminated with light resistance drops dramatically.

   

The animation opposite shows that when the torch is turned on, the resistance of the LDR falls, allowing current to pass through it.

   

Circuit Wizard software has been used to display, the range of values of a ORP12, LDR . 

When a light level of 1000 lux (bright light) is directed towards it, the resistance is 400R (ohms).

When a light level of 10 lux (very low light level) is directed towards it, the resistance has risen dramatically

to 10.43M (10430000 ohms).

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