Understanding Relay Coil Voltage Specifications
Basic Electronics

Understanding Relay Coil Voltage Specifications

by Robert_Fay @ digikey.com: When learning about relays there are a couple coil voltage specifications that can be a little tricky to understand. There are typically 4 specification for coil voltage listed in the datasheet. For this example we will be looking at relay part Z2352-ND 14....

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USB powered – PCB TeslaCoil
High Voltage

USB powered – PCB TeslaCoil

Daniel Eindhoven build a usb powered Teslacoil able to produce small sparks. The coil of the device is printed on the board! A new and improved PCB spiral Teslacoil. This Teslacoil has etched windings on a print circuit board. It has a USB interface which also powers the coil. The...

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Contactless payment ring – A tutorial on NFC antenna coil design
RF

Contactless payment ring – A tutorial on NFC antenna coil design

Jatinder has tipped us with this latest post. He writes:  I have a done a video about a contactless payment (NFC) ring that I have made. The video talks about NFC antenna coil design and how I used the concepts to make the wearable ring. Contactless payment ring – A tutorial on...

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