Question about an Eprom chip (2716)....
I am in the UK which as I am sure you know has 230 volt standard AC. I have an eprom chip and I am building a copy of another circuit board - a nice little light chaser from the 1980's, as far as I can see tracing the tracks on the original board, several of the pins on the Eprom chip are wired directly 230 volts on the actual chip - I even meter'd the original board while live and found 230volts feeding a number of the pins on the original Eprom!!!. I am relatively inexperienced with electronics and thought Eproms used 5 volts - have I gone mad and having a late night or does it sound about right that certain chips on an Eprom do and can use 230 volts. The pins on the chip on the original board have metered at 230 volts and the original board is flashing away in front of me as it always has done. Slightly confused. Any help much appreciated!
I am in the UK which as I am sure you know has 230 volt standard AC. I have an eprom chip and I am building a copy of another circuit board - a nice little light chaser from the 1980's, as far as I can see tracing the tracks on the original board, several of the pins on the Eprom chip are wired directly 230 volts on the actual chip - I even meter'd the original board while live and found 230volts feeding a number of the pins on the original Eprom!!!. I am relatively inexperienced with electronics and thought Eproms used 5 volts - have I gone mad and having a late night or does it sound about right that certain chips on an Eprom do and can use 230 volts. The pins on the chip on the original board have metered at 230 volts and the original board is flashing away in front of me as it always has done. Slightly confused. Any help much appreciated!