Lenovo Rectangular Power Adapter to 5.5mm Round Jack
To use a Lenove Power supply together with my traveling solder station T12-642 I build a small TRIM adapter. The Lenovo power connector is called “TRIM Series connector” and my solder station needs a 5.5mm round jack power connector. So I needed a TRIM to 5.5 jack plug.
To adjust the power of the supply one has to put a resistor between the signal pin and ground. Because I need 100W I used a 1k resistor between the signal pin and the ground.
Resistance on Signal Pin:
power rating resistance 36 W 7,3 kΩ 45 W 120 Ω 65 W 280 Ω 90 W 550 Ω 135 W 1 kΩ 170 W 1.9 kΩ 230 W 4.6 kΩ
The soldered adapter looks like that:
… and with some shrinking tube like that:
