Outside World Voltage Detector Interface / GPIO / Arduino
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- Опубліковано 5 бер 2020
- This video will describe the workings of a voltage detector interface to a microcontroller using the GPIO pins. This isolated interface voltage range is 5 volts to 240 volts AC or DC.
HCPL3700 Datasheet:
www.mouser.com/datasheet/2/14...
Telephone line ring detector using the HCPL3700:
• Build a Phone Activate... - Наука та технологія
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Thanks for showing off the HCPL3700. I immediately ordered some :-)
Very handy, universal and safe. Thanks!
Thanks for sharing another interesting chip. Love this channel.
Never knew about this IC before. Thanks for the video
And good vid, 0033mer. Concise content, well explained. Thanks from Waterloo, Ontario.
Thanks for the feedback!
You explained this so well... Thank you.
You're very welcome!
thats a handy IC, thanks for showing it.
You're Welcome.
Very interesting. Thank you, sir
Wonderfull... as usual !
As usual the excellent theory and details, such as the reference to the bridge rectifier diodes acting as Zener diodes limiting the voltage for the smoothing capacitor. I do recall when I was in telecommunications many years ago that the ring voltage frequency was 17 Hz. Not sure if this has changed or maybe different in Canada. I am in South Africa and we followed the British Post Office Standard at that time.
The standard ring voltage frequency in the USA and Canada is 20Hz. In Europe it is usually 25 Hz. The range is from 15 - 68 Hz.
en.wikipedia.org/wiki/Ringing_(telephony)
hi, good lecture, you can add to the title of the video the IC name so anyone that searches for it will be suggested with your explanation
Thanks for the feedback. The part number HCPL3700 is in my tag list so anybody searching for that part number in YT should link to my video. The datasheet URL is also in the description box.
Do you have to take the 65% of the DC voltage? I see that when is AC but not sure why you will do that with DC. Great chip and thanks for “discover” it fir your subscriber. I only wish you will use C++ instead of Forth.
The chart voltages are "threshold" where the circuit just starts to turn on. You can pick your own percent margin to ensure reliable sensing.
Great project. I want to build it on my breadboard. I see you have the buzzer on pin 13 via a 1K resistor and a transistor. Which transistor are you using?
Any general purpose NPN transistor like the 2N3904 or 2N2222 will work.
more project, please
Does anyone know of a portable ascii video terminal “vt-100” type interface to use with “in the field” forth controlled atmega328’s?
One option is to use your smartphone. There is an Android app I use called Blueterm.
You just need to connect a HC-06 Bluetooth module and you can connect wirelessly.
Check out this video around the 5 min mark: ua-cam.com/video/yXRWQpJrK6g/v-deo.html
1v to 220v ac/dc input will give 5 volts out, and 0 volts give 0-volt output am I right?
You will have to refer the datasheet to get the minimum and maximum voltage threshold which typically is the threhold volatage of the LED inside the optocoupler, now the datasheet of this Chip, HCPL3700, states "5 V to 240 V AC/DC voltage sensing" however the VCC can be as low as 2V and go upto 18V
were in our great country are you, I am in Ontario.
Vancouver BC
@@0033mer want some snow....lol I do enjoy your videos. I am a tech, RCC 1980/81. Been working in electronics ever since, from Fire Alarms with Edwards to teaching Computer techs at TSB. I took a hiatus on electronics while I repaired windows... lol, Computers rarely broke, It was all bad Microsoft software that fed my family for 20 years. Now I am retired and have discovered the Arduino and have been building tons of projects. You have taught me a lot of things I can do with it... Thank You.
porque el 60% ?