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Your cart is empty.This is a CMOS 8-bit successive approximation A/D converter that uses a differential potentiometric ladder-similar to the 256R products. This converter is designed to allow operation with the NSC800 and INS8080A derivative control bus with TRI-STATE output latches directly driving the data bus. This A/D appears like memorylocations or I/O ports to the microprocessor and no interfacing logic is needed.
TB
Reviewed in the United States on January 7, 2025
The metal case of the transformer was all scratched up and dented. Also there was some kind of sticky goo on all the wires. I was kind of worried about connecting this to 120VAC. Took a few tries to find the primary side from the secondary side. There are three wires sticking out of both sides of the transformer. There is no documentation or any color coding. It'll work for my application but I'm not very happy with it. I remember when Jameco was a good company to deal with for electronic parts.
CHRIS DELSORDO
Reviewed in the United States on August 4, 2024
No labels on transformer No markings on box. I made a sketch to help others
MC
Reviewed in the United States on August 29, 2024
This is garbage. First, build quality is terrible. Cheap construction. Second, no documentation and their website provides no information. Third, voltage on secondary is variable. Lastly, it lasted about an hour then overheated and died. It’s not worth the money. Find something better.
Carlos R.
Reviewed in the United States on December 3, 2024
Does what is required for a transformer.
Viking Lawyer
Reviewed in the United States on September 14, 2023
You will find the leads on these resistors to be thicker and more maluable than most other resistors found here on Amazon. These are just like any other good quality resistor you buy from the Big Boy electronic parts houses. Magnets don't stick to the leads - Because... Yup, magnets don't stick to copper, or in this case tinned copper. These are now the only brand I trust when I buy resistors on Amizon.Another benefit is that they don't have or develop little spots of rust as all the others did from time to time. This makes the solder wetting work verry well. If you're new ato nd just learning electronics, I'd go with these. I only wish the selection was a bit wider but I won'd dock points for this of course.I use these in electronic projects that I build as a hobby but I'm pretty perticular about parts so It's refreshing to find this brand.
M Fry
Reviewed in the United States on February 13, 2023
The negative reviews are due to people not identifying the colored wires correctly. No wiring diagram was included as expected, so if you connect it up incorrectly you will either blow up the transformer or only get 10 volts output instead of 18 volts.The product works well and gives out an unloaded voltage of 20 volts, centre tapped, so when loaded it will probably drop to around 18 volts as described. Check your application to make sure that 20 volts ac, is not too much for your circuitry to handle. When rectified and smoothed, the unloaded DC voltage will also be proportionally higher too. Yellow-red-black is the mains voltage primary. Connect 120volts to the red-black wires.... Or the red-yellow.Cut back the unused wire if you want, but definitely make sure it is well insulated and won't touch anything. If you want to run this on 240v use black-yellow. Red is the centre tap on the primary.20v will appear between the two white wires on the secondary. Black is the secondary center tap. Good luck and BE SAFE.
eric smith
Reviewed in the United States on November 11, 2022
I bought this transformer for my audio project that I need 18VAC per side, but it will only put out 10VAC per side so needless to say it will not work for my project. I will use it with another project. The primary wiring is red and black " yellow is not used" to get 10VAC output per side which is different Than I use for my other Jameco transformers. Thought that was odd. If you use primary black and yellow you will get 5VAC on each side, so if you are looking for a smaller transformer then get this one. I did read the prior reviews and seen that others had the same numbers. I was hopeful that it was just a miss packaging error, but it was not. All in all, it does run smooth and stays cool during use.
Tidynan
Reviewed in the United States on October 23, 2022
Ok I certainly understand why anyone could have trouble connecting this up properly and without a loud snap and popped circuit. Absolutely no indication as to anything was provide on or in the packaging.I have provided a little drawing where I show what mine turned out to be like to help someone else who wants one of these. This drawing illustrates the various connections and associated wire colors (hope these colors are consistent in the product you receieve) .I purchased this one because the description described a 36 volt ac center tapped 110 or 220 vac transformer but after connecting it to AC line voltage and making some measurements it is actually a 20 volt center tapped transformer when connected in the 110 volt configuration and a 10 volt center tapped transformer when in the 220 volt configuration. These results are certainly consistent with a 20 volt center tapped transformer but no where near the 36 volts as was posted in the product literature.I dealt with James Electronics ages ago when I was in collage and building electronic projects. I hope this was a simple mistake but now I am a bit worried about their concern for customer satisfaction.
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