User's Manual
USER MANUAL V1.2
© 2010 EnOcean | www.enocean.com PTM 33x / PTM 33xC / PTM 330U User Manual V1.2 | Page 13/27
PTM 33X / PTM 33XC / PTM 330U
4 APPLICATIONS INFORMATION
4.1 How to connect an energy harvester
PTM 330 can be connected to ECO 200 without soldering. ECO
200 provides contact springs which can directly be connected
to contact pads of PTM 330. The contact pads on the bottom of
the PCB are shown below (left). A second orientation where
PTM 330 is rotated 180° with respect to ECO 200 is also possi-
ble as shown with dashed lines.
4.2 How to generate an equivalent energy pulse
PTM330 can also be operated from an external equivalent energy pulse.
As the source impedance is not known a procedure is defined how to find the needed dura-
tion of the pulse.
The pulse must provide a voltage between 5 V and 6 V for maximum 10 ms time.
The length of this supply pulse needs to be defined by measuring the remaining voltage on
the storage capacitor after the 3rd subtelegram, according to the following procedure:
1) Discharge the storage capacitor (see photo) completely
2) Apply a short pulse, voltage between 5 V to 6 V which charges the capacitor
3) Measure the voltage drop at the storage capacitor to ground (between pin 13 and
pin 12) while the sub-telegrams are being transmitted with an oscilloscope
4) The remaining voltage shortly after the 3rd sub-telegram should be 2.5 to 3.0 V
storage capacitor
5 10 15 20 25 30 35 40
0
1
2
3
4
5
6
ms
V
1st
2nd
3rd
2.5-3.0V