LambdaFox

Schmitt triggers are a circuit building block frequently used to add a level of noise immunity to a circuit. They are used in many applications from hardware button de-bouncing, signal conditioning, to oscillator circuits to name a few. Schmitt triggers work by adding hysteresis to an input signal such that it takes an additional threshold to change states. Hysteresis is added by providing feedback from the output back to the input. Once a state change is triggered the signal causing the state change must drop below the threshold point to trigger a reverse state change.In this article a mathematical analysis... [Read More]

The Ohaus Scout SPX is a portable electronic balance that has a peripheral interface connector. This connection supports many different proprietary peripherals such as printers, displays, ethernet, Bluetooth, and so on. Each of these peripherals use this same 6-position mini DIN connector. This article will discuss how this interface works and how to enable the serial port capability for just a few dollars worth of materials. [Read More]

In this article we explore some high level concept of a series topology linear voltage regulator with some SPICE simulations and mathematical analysis. [Read More]

In this article we explore the fundamentals of the Decibel units and how to derive them using only power and resistance. We then provide an example of how these calculations appear in the time domain such as on an oscilloscope. [Read More]

The Fluke 376FC is a Bluetooth wireless AC/DC clamp meter which communicates over the BLE protocol using a proprietary mobile application interface. As of writing this article there is no known desktop application or API for interfacing to this unit. Therefore the goal is to produce a working interface which connects to the unit and allows a user to interface to the device remotely from a PC. [Read More]

In this article we discuss the design of a Form-A reed relay based multiplexer for test and measurement applications. [Read More]

In this article we discuss the design and development of a high reliability, high density digital signal isolator with parasitic powered inputs. [Read More]

In this article we discuss the development of a static resistance simulator for use in functional testing. [Read More]