(20) Nos Vactec Vactrol Incandescent Bulb Cds Cell Ldr Optoisolator Optocoupler

US $39.99

Dayton, Ohio, United States
Jan 29th

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(20) NOS Vactec Vactrol Incandescent Bulb to CdS Cell LDR Optoisolator/Optocouplers. I bought these years ago with the idea of using them in guitar effects, compressors, etc. They are well suited to this purpose as they use an incandecent bulb (a grain of wheat bulb) as the light element, giving similar rise times as the old 1960s-70s equipment that originally used them. I have no original data on these, but have measured them using a calibrated 6.5 digit 4-wire digital voltmeter. All measurements are approximate as individual units may vary. Bulb Resistance (Dark): 9.2-9.8 Ohms Dark Resistance (0V) = >10Meg Resistance at: 0.6V = 1Meg 0.9V = 100k 1V = 24k 1.5V = 5k 2V = 1.25k 2.5V = 700 Ohm 3V = 400 Ohm 3.5V = 260 Ohm 4V = 200 Ohm 4.5V = 160 Ohm 5V = 130 Ohm 5.5V = 110 Ohm 6V = 90 Ohm That shoud give you a good working idea of the slope of the resistance values in these units! ??(?o?)??? ( ?o?) ????(?o?)??? ( ?o?) ?? Combined shipping: For ALL multiple items purchases! +Ignore shipping calculator for multiple items - Shipping will be combined after purchase! Payment: Due 3 days after auction end or buy it now. Use Ebay's checkout feature & pay via Paypal. International Shipping: +Insurance for international shipments is only available for Priority Mail. +Buyer is responsible for paying any applicable customs/brokerage fees, duties, use/sales and import taxes, etc. Please do not ask us to declare a lesser value on any of our items. +Shipping to international locations (such as Italy, France, Vietnam...) may take longer than advertised; this is a problem with the system in your country, all of my shipments go out as stated above. Returns: +Items are guaranteed to be as stated in the auction. In the rare case we make a mistake and something is not as stated, we honor our 14 day return policy, including a full refund! +Otherwise, due to age and us not knowing how the item will be used, they are sold as-is, no returns. Feedback: +Rate our shipping based upon when it was mailed, not when it was received. +If you have any reason to give us less than 5 stars on our DSR, please contact us so we can correct the mistake! -->We encourage all customers to contact us regarding any problems with the transaction before leaving negative feedback/low DSR ratings. We are honest people selling the things we're interested in, so we are invested in having everything to go smoothly for us both. If there’s any problem, we will be happy to resolve it for you!<-- Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Brand	Vactec
Model	21L417