UV TRON® DRIVING CIRCUIT C10423 Compact, Lightweight, Low Current Consumption Operates as High-sensitivity UV Sensor Just by Connecting to a UV TRON R9454 Ideal for Fire and Arson Surveillance FEATURES The C10423 is a compact power supply and signal processing circuit developed to drive the high-sensitivity UV sensor "UV TRON R9454". By using a double-sided printed circuit board we cut the area size to half that of conventional drive circuits (C3704 series). Since the high-voltage supply and signal processor are mounted on the same circuit board, the C10423 can operate as a high-sensitivity UV sensor just by connecting a UV TRON and supplying a low DC voltage. The signal processing circuit cancels out background discharges which may occur in the UV TRON due to natural excitation light (cosmic rays, solar UV rays, etc.). This minimizes erroneous detection so the C10423 output signal can be used without additional filtering. Combining the C10423 with a high-sensitivity "UV TRON R9454" (sold separately) for use as a flame detector yields sensitivity capable of detecting the flame from a cigarette lighter (flame length 25 mm) even at distances up to 5 meters away. * UV TRON is sold separately DIMENSIONAL OUTLINE (Unit: mm) ANODE APPLICATIONS ●Flame detectors for gas and oil lighters ●Fire alarms ●Arson watch monitor ●Combustion monitors for burners ●Electric spark detector CATHODE GND 36 26 C10423 LOT MARKING 7 A 1 2.5 CX 2 1 + – Unit 2.54 7.62 — 40 NOTE: 1The output pulse width can be extended up to about 10 s by adding a capacitor to the circuit board. 2Since the output impedance of this power supply is extremely high, an ordinary voltmeter cannot be used. Use a voltmeter that has an input impedance of more than 10 GΩ. 3No condensation TOP VIEW 1.6 12 MAX. 50 V ms — °C V mA g 2.5 MAX. Description / Value Open Collector Output (High Impedance, Output Signal Low Impedance) (50 V, 100 mA Max.) 10 ms with pulse output 1 UV TRON Supply Voltage 400 2 Quenting Time Approx. 25 Suitable UV TRON R9454 (sold separately) Operating Ambient Temperature 3 -10 to +50 Input Voltage (DC) 12 to 24 Current Consumption Max. 4 Weight Approx. 12 8 4- 3.5 SPECIFICATIONS Parameter 4 GND SIDE VIEW TPT A0043EA Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2007 Hamamatsu Photonics K.K. UV TRON® DRIVING CIRCUIT C10423 Figure 1: Schematic Diagram UV TRON R9454 (SOLD SEPARATELY) ANODE CATHODE K A +400 V +5 V + SIGNAL PROCESSING CIRCUIT 1 3 5 9 HIGH VOLTAGE DC-DC CONVERTER CONSTANT VOLTAGE CIRCUIT OUTPUT SIGNAL WAVEFORM 5V POWER SUPPLY J1 J2 J3 J4 Q Q GND 5V GND – GND OPEN COLLECTOR OUTPUT (1) HIGH IMPEDANCE OPEN COLLECTOR OUTPUT (2) LOW IMPEDANCE 10 ms 5 CHIP JUMPER FOR Tr: 50 V • 80 mA SETTING BACKGROUND CANCEL LEVEL TPT C0019EA Figure 2: Method of Connection CONNECTING POINT OF UV TRON A: Connecting Anode of UV TRON K: Connecting Cathode of UV TRON G A K G CHIP JUMPERS FOR SETTING BACKGROUND CANCEL LEVEL CX 2 1 + – C10423 7 A 1 POWER SUPPLY INPUT AND SIGNAL OUTPUT POINT –: GND +: POWER SUPPLY (DC) 12 V to 24 V 1: OPEN COLLECTOR OUTPUT 4 HIGH IMPEDANCE 2: OPEN COLLECTOR OUTPUT LOW IMPEDANCE J4 J3 J2 J1 The background cancel circuit of the C10423 is designed to output a signal only when 1 to 9 or more signal pulses from the UV TRON are detected consecutively within 2 seconds. The background cancel level is set to chip jumper position 3(J2) before shipment. If the C10423 is used in locations where a high amount of natural excitation (background) light is present, then change the cancel level by reconnecting the jumper position to 5(J3) and 9(J4). CX: POINT FOR ADDING A CAPACITOR TO EXTEND OUTPUT PULSE WIDTH 5 NOTE: 4The maximum rating of the open-collector transistor is 50 V / 100 mA. When connecting a relay or buzzer, use caution not to exceed this rating. 5The C10423 output pulse width is set to 10 ms before shipment. To expand the pulse width, connect a capacitor to this terminal. (Make sure the polarity is correct when using an electrolytic capacitor.) Example: CX = 1 µF, Pulse width = approx. 1 s CX = 10 µF, Pulse width = approx. 10 s TPT C0020EA PRECAUTIONS FOR USE ● Since the operation impedance is extremely high, the UV TRON should be connected as close as possible to the circuit board within 5 cm. ● Take care to avoid external noise since a C-MOS IC is used in the circuit. It is recommended that the whole PC board be put in the shield box when it is used. ● The DC-DC converter type high-voltage supply for this unit has a very high impedance. If the ambient humidity is high, then electrical leakage on the printed circuit board surface might lead to a drop in the supply voltage to the UV TRON. This voltage drop might cause lower sensitivity or malfunctions. If using the unit in a high humid environment apply a siliconbased moisture-proof coating to the UV TRON connection terminals. WEB SITE www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Electron Tube Division 314-5, Shimokanzo, Iwata City, Shizuoka Pref., 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205 U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 E-mail: [email protected] Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 E-mail: [email protected] France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 E-mail: [email protected] United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road Welwyn Garden City Hertfordshire AL7 1BW, United Kingdom, Telephone: 44-(0)1707-294888, Fax: 44(0)1707-325777 E-mail: [email protected] North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 SOLNA, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: [email protected] TPT 1023E01 Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 E-mail: [email protected] JUN. 2007. IP