Here’s an application note from Maxim describing hot-swap circuits, and the advantages of dedicated hot-swap ICs over discrete component circuits: There are many approaches for protecting a system against electrostatic discharge (ESD), surge current, overcurrent, undervoltage, overvoltage, and other disruptions to power. Industry, company, or regulatory standards such as UL®, USB, IEEE®, CSA, or IEC […]
Tag Archives: circuits
Sparkfun and Pololu 5V boost circuits
A product comparison from the forum: I recently compared two similar 3V -> 5V boost circuits, the Sparkfun #08999 5V out @ 100 mA (based on NCP1400) and the Pololu #798 5V out @ 200 mA (based on NCP1402). The details are below, but the executive summary is: the Pololu 5V boost circuit module has […]
Voltage divider calculator
If you need to interface a higher voltage sensor output with a lower voltage chip the simplest solution is the good old fashioned voltage divider. Here’s an online calculator to help you compute the necessary resistance values courtesy of Raltron.com.
DIY Squishy dough for simple circuits
Here’s a novel way to connect simple circuits. By mixing up your own conductive and non-conductive play doughs you can connect components without wires. Adds a new dimension to the term “wireless”! Just don’t think it would be a good idea to go through airport security with a doughy substance with components and flashing LEDs […]