I call back that last update (see previous post). Apparently the transformer wasn’t sufficient after all due to lack of mechanical protection of windings. The safety standard for transformers, EN 61558-1, requires that insulation must not be easily damageable during device assembly. So windings must be mechanically protected from being hit by other objects.

Luckily I found near perfect “drop-in” replacement for the transformer. This model actually probably would have been chosen in the first place if it were available at the time of logic circuit PSU design. The new transformer type was just introduced to market at late 2012.

The new transformer mounted using the “3D” installation method familiar to all tinkerers

This week I have been wandering around Photonics West exhibition at San Francisco. I have been collecting leads for our new product area: laser diode drivers. LD drivers are a natural expansion to motor drives category as they share many of the closed loop current control technologies. Check out Intensify Nx50 product site!

Intensify Nx50 laser diode driver

Meanwhile Argon prototype has been sent to a reputable standard verification company to ensure it’s compliance to EN 61800-5-1 safety stadard. Safety is a highly critical part to get correct as failures to comply could become very expensive. Granite Devices is taking product liability seriously.