Rubidium Glow

Efratom LPRO-101 Rubidium Frequency Reference Teardown

Time for another Rubidium Standard Teardown! This one was supposed to happen a year ago, however I completely forgot about this unit. This is an Efratom / Datum LPRO-101 Rb standard, which does differ somewhat internally from the previous unit I tore down. Above is the unit with the Mu-Metal

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Front Panel & LCD

Yellow Jacket Titan P51-870 Digital Manifold Teardown

New tool time! I figured now I’m a fully ticketed member of the F-Gas community, I’d treat myself to passing the course by buying a decent set of refrigeration gauges. This is the Yellow Jacket P51-870 Titan manifold, a fully digital unit with all the useful functions built in. Basically

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Epever Tracer 4210AN MPPT Charge Controller MOSFET Repair

Here’s some damage to a 1-week old Epever Tracer 4210AN MPPT Charge Controller, where some of the power FETs have decided they’ve had enough of this world. These are Alpha & Omega AON6512 N-Channel Enhancement devices, rated at 30V 150A. From probing around, these seem to be on the battery

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R-134a Refrigerant Analyser Module Exploration

This unit recently appeared on eBay, as a spare part from a refrigerant charging machine, and I figured it would make a good explorational post. This unit analyses the purity of R-134a refrigerant gas, using an Infrared sensor cell, and communicates over RS-232. The sensor cell itself is at the

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