The constitution circuit diagram of portable rapid pulse generator

Published:2011/6/30 5:39:00 Author:Rebekka | Keyword: portable rapid pulse generator, constitution circuit | From:SeekIC

Since the whole TTL series is the lack of a high-speed monostable multivibrator and the ECL requires a small voltage swing and a small range power supply. It drives us to use F series of gates which has fast transition time and small transmission time delay. This requires making a small portable fast pulse generator. It is used to test the high-speed photomultiplier that used in the study of gamma-ray astronomy. The use of only two integrated circuit is to help reduce the consumption and narrow the size(Figure 1). Output the pulse is width from the output gate G4 in IC2. The pulse width is less than 10ns and the rise and fall time of the normal high pulse is about 2.5ns. It is equivalent to the delay of three gates. These pulses are very suitable for decrease the cathode potential of HLMP-CB-15-speed blue LED. But the anode of LED is clamped to 5V. G4 forces almost the entire 5 V supply voltage adding to the LED, so that the large voltage swingof the LED which is printed on circuit board solder connecting to the edge has the best brightness. The rechargeable battery is fixed at the other side of the printed circuit board. The circuit uses CMOS timer IC1, it only costs less than 4 mA of current.



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