Superposition has pulse delay suck close relay circuit

Published:2011/8/29 1:47:00 Author:Jessie | Keyword: Superposition has pulse, delay suck close, relay | From:SeekIC

After the switchgets power, time process begins, capacitor C isdischarged firstlyand then charged by20MΩ charging resistor. The capacitor's recharging voltage has a negative pulse. This pulse isproduced by astable multivibrator's transistorsBC170C with differential capacitor and goten from 1.8 Ω resistor. Sharp pulse's value is about 4.5 V, interval is 20ms, and time constantis 50 μs.



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