[2 pc] OptoCoupler, Analog Photocell, High dynamic range

Description

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OptoCoupler-Vactrol
OptoCoupler, Analog Photocell, High dynamic range
Case: 4 pin 5mm
Lot Size: 2 units
LED - to- photoresistor
Purely resistive output
Huge dynamic range: over 100,000: 1 resistance ratio
Audio Opto Coupler ( NSL 7053)
Used extensively in audio compressors, audio level controls, audio limiters, expanders/noise gates, guitar tremolo effects, guitar amplifiers, and musical instrument effect boxes.
Photocell has light-averaging characteristics, which responds to the envelope of a changing signal.
Inside the black case is a 2 lead photocell (not a photodiode or photo-transistor) and a 2 lead LED. This is why the device finds extensive use in audio applications (photocell instead of photodiode).
The LED requires about 10-16mA current and the resistance of the photocell varies from 150K up to megohms when the LED is off to under 400ohms when the LED is on. New. NOTE: Dot on case marks the cathode (-) lead of the LED.
OptoAnalog
I only ship to buyer's EBAY shipping address
Purchases can only be changed or cancelled before payment.
Best Genuine USA parts from USA distribution.
Avoid Chinese counterfeit parts and Chinese seller problems!
Transit time 5-7 bus days in USA, however USPS does not guarantee these times, and can exceed them. If you have any time constraints, contact seller before bidding / buying, so we can both come to an agreement.
No cancellation possible after Payment.  PAYMENT CLOSES ORDER AND COMMITS IT FOR SHIPPING. Your shipping label is created and billed along with insurance the moment you click "PAY". Paypal and insurance charges are non-recoverable.
Any returns not resulting from seller wrongdoing will be assessed a restocking fee of 18% and will forfeit shipping costs.
International transit times can reach 8 weeks, 10 weeks for Italy and Brazil. You need to contact seller for alternate shipping options at extra cost if this is not acceptable to you.