The Zeta is a minimal Z80 toggle-switch computer. It has a Zilog Z80 microprocessor, 256 bytes of RAM and the only interface is the front panel which directly sets and reads the address and data buses. There is a video of it executing Euclid’s algorithm: https://www.youtube.com/watch?v=0GmY_UrbXnA At the moment, there is only one real source […]
The Zeta minimal Z80 toggle-switch computer Continue Reading
The LTC®3807 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage. A constant frequency current mode architecture allows a phase-lockable frequency of up to 750kHz. The 50μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized
When we first encountered the offspring of this Digi-Key/Mentor CAD collaboration, it was still in beta, and the pricing model was unclear. Now that it’s here for real, let’s take a quick look. For more detail: Mentor meets Digi-Key, low-cost CAD results
Mentor meets Digi-Key, low-cost CAD results Continue Reading
Hysteresis can be added to a comparator circuit to improve its stability, especially when the input signal is noisy. In this post, we will examine the hysteresis characteristics of some common comparator and Op Amps using an oscilloscope. Perhaps the most intuitive way to visualize the hysteresis in a circuit is to plot the input
Visualizing Comparator and Op Amp Hysteresis Continue Reading
The LTC2983 measures a wide variety of temperature sensors and digitally outputs the result, in °C or °F, with 0.1°C accuracy and 0.001°C resolution. The LTC2983 can measure the temperature of virtually all standard (type B, E, J, K, N, S, R, T) or custom thermocouples, automatically compensate for cold junction temperatures and linearize the
LTC2983 – Multi-Sensor High Accuracy Digital Temperature Measurement System Continue Reading
RTC or real-time clock is a kind of computer clock for keeping track of the recent or most current time. Commonly, RTCs are present in almost all or any device, which are electronic in nature that needs to keep time accurate. Meanwhile, temperature sensors are devices that gather data concerning the temperature from a source
I2C Temperature Sensor & Real Time Clock Continue Reading
There’s another promising contender in the race to supplant the dominance of lithium-ion and metal-hydride based batteries in the world of energy storage. New research from the Karlsruhe Institute of Technology’s (KIT’s) Helmholtz Institute Ulm (HIU) details the development of an electrolyte that can be used in new magnesium-sulfur battery cells that would be more
New electrolyte to enable cheaper, less toxic magnesium-sulfur-based batteries Continue Reading
Did you miss our webinar? Watch the VIDEO – record… With the Bolymin graphic embedded module it´s possible to focus only on software development – hardware is done..All participants of the webinar could get Bolymin BE635 graphic embedded module and PICkit 3 In-Circuit Debugger with 25% discount. For more detail: How to effectively handle
How to effectively handle human-machine interface in your applications? Continue Reading
In this episode Shahriar repairs an Agilent 33250A function and arbitrary waveform generator which does not power on. The unit is equipped with a soft power switch which might be responsible for the fault. After a brief look at the unit’s constructions, the fault is traced to a few possible locations. The schematic of the
Teardown and Repair of an Agilent 33250A Function and Arbitrary Waveform Generator Continue Reading
What’s inside a smart card pinpad EFTPOS terminal? Dave looks at the anti-tamper mechanisms inside a Sagem Monetel EFT930S For more detail: EEVblog #687 – EFTPOS PIN Pad Terminal Teardown
EEVblog #687 – EFTPOS PIN Pad Terminal Teardown Continue Reading
