I checked the self running voltage of wireless module TWE-L-DI-P with 100uF capacitor. I varied Vcc voltage by variable constant voltage regulator.
I monitored whether to be running or not by consumption current measured by DMM PC510. The TWE-Lite consumes 18mA on default mode. Decreasing the supply voltage, the consumption becomes zero. The decreasing 2.0V is voltage not to run. But it cannot restart when it turns off.
When the restart voltage is 2.1V, it runs. The specification voltage is 2.3V, however. The difference 0.2V may be effect of the capacitor.
I also monitored pin Tx voltage by DSO. It follows power supply voltage. I used to monitor their voltages by cursor mode 500mV/div, 1ms/div range.
Ref
TWELITE DIPアンテナバリエーション
nabezoco
I develop wireless temperature sensors for greenhouse. I have a DSO and make my scratch devices. Also am I a simple programmer of VB, C. My Slip21 program for their sensors that works for Windows XP later. enokie.dip.jp now is my site that publicizes field test of wireless sensors at real time.
Monday, April 3, 2017
Wednesday, December 28, 2016
Tuesday, December 27, 2016
Monday, December 26, 2016
Sunday, December 25, 2016
Saturday, December 24, 2016
Friday, December 23, 2016
Subscribe to:
Posts (Atom)