Products - Jens Andresen

TREE OF LIFE
TREE OF LIFE
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Products I helped designing

Maritime Mobile VHF RS7100
25W Full Duplex Transceiver
The Duplex Filter was designed as a 5 Cavity helix.
One of the first Maritime Mobile Transceivers to be controlled by a microprocessor.
It used a switch mode power supply based on the first SIP-MOS generation of NMOS FETS from Siemens.
For further data see the PDF of the product manual to the left.
VHF Base Station RS 7200
This base station was developed exclusively for the Danish Maritime Base Station network during 1982/3. They were in use until decommissioned in 2009.
Dancall Mobile Phone for NMT/TACS
This was one of the first NMT 900 mobile telephones. It was intended to be mounted in a vehicle, but could also be carried, since its weight was only about 3 kg. NMT 900 was lauched january 2 1987, so the DC 900 reached the market just in time.
The NMT net was decommissioned march 1st 2002, and replaced by the fully digital system GSM.
Grundfos pump controller LC 107
The pump controller series LC/D 107, 108, 109 and 110 was developed from 1998 to 2000 to control Waste Water pumps in a pit.
Is was based on the Controller modules CU211 and CU212 for single and dual pump control respectively.
It could handle various level sensors, such as float-switches, pneumatic switches and sensor rods.
It was in production until 2016.
Grundfos WasteWater pump SEG AUTOadapt
This pump was developed from 2001 to 2003. It is a die cast iron pump with a built-in controller and sensors. It had never been tried before to build the sensors and the controller into a WasteWater pump. It has grinder functionality, and can communicate with a control-box via the power cable, so that internal data can be transmitted up, and commands can be reviewed by the pump.
The pump has many variants based on voltage and capabilities. It is still in production.

This home page was created by Jens Andresen. Any data herein are my own, and may not be copied or misused.
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