UV TRON® Driving Circuit C10807 C10807 Description C10807 was developed for UV TRON driving circuit as alternative to C3704, that is also used as singnal processing circuits. 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 C10807 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 C10807 output signal can be used without additional filtering. Applications Combining the C10807 with a high-sensitivity "UV TRON R9533, R2868" (sold separately) for use as a flame detector yields u Flame detectors for gas and oil lighters sensitivity capable of detecting the flame from a cigarette lighter u Fire alarms (flame length 25 mm) even at distances up to 5 meters away. u Arson watch monitor u Combustion monitors for burners u Electric spark detector Specifications Description / Value Parameter Output Signal Open Collector Output (50 V, 80 mA Max.) 10 ms with pulse output① — 350② V UV TRON Supply Voltage Approx. 25 Quenting Time Suitable UV TRON R9533, R2868 (sold separately) Operating Ambient Temperature③ — ℃ 12 to 24 V 4 Max. Weight ms -10 to +50 Input Voltage (DC) Current Consumption Unit Approx. 12 mA g Notes： 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. SOCAY Electronics Co., Ltd. Revision July 2, 2015 www.socay.com 1/3 @SOCAY Electronics Co., Ltd. 2015 Specifications are subject to change without notice. Please refer to www.socay.com for current information. UV TRON® Driving Circuit C10807 C10807 Figure 1: Dimensional Outline (Unit: mm) Figure 2: Schematic Diagram SOCAY Electronics Co., Ltd. Revision July 2, 2015 www.socay.com 2/3 @SOCAY Electronics Co., Ltd. 2015 Specifications are subject to change without notice. Please refer to www.socay.com for current information. UV TRON® Driving Circuit C10807 C10807 Figure 3: Method of Connection Notes： 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 C10807 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 Precautions For Use u Since the operation impedance is extremely high, the UV TRON should be connected as close as possible to the circuit board within 5 cm. u 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. u 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. SOCAY Electronics Co., Ltd. Revision July 2, 2015 www.socay.com 3/3 @SOCAY Electronics Co., Ltd. 2015 Specifications are subject to change without notice. Please refer to www.socay.com for current information.