TEKTRONIX THS710,THS720,THS730 External Battery Charger Build

[zyxel13]

In a Previous Video is showed my 1:1 Drop-in LED Backlight Controller for the THS7xx Series of Tektronix Isolated Scopes.

Today I want to show my Design & Build of a External Battery (Accupack) Charger tor these Scopes.

It can be Powered either from a Wall-Wart  5V or 12V Power Supply, the default is the 5V PSU with ca. 2Amps. If a 12V one is to be used, a onboard DCDC (Mini360) Buck must be populated along with 2 Caps.

I used a Standalone Charger Chip (Asian Brand) that offers all the Features I wanted, the only drawback of this Chip is the limited Status Signaling, just Charging or Charged.

This problem I solved with an additional ATTINY85 that takes care of the Signaling using a WS2812 type Intelligent LED.

Green Blinking : Battery not detected or not Inserted
Blue Steady : Charging
Green Steady : Charged
Red Steady : Output or Battery shorted or Battery too low inner Resistance

Hexcode for Tiny, Steplfiles, STL Files, Gerbers & BOM are available on Request.

Attached Pictures and 2 Videos of the Charger Build.





Cheers,
Konstantin

[TERRA Operative]

This is really cool.