As shown, it is a high-stability pulse period that gradually broadens the timing circuit. In the circuit, NE555(1) constitutes a pulse gradually widening timing circuit, NE555(2) constitutes a monostable trigger circuit, and NE555(1) and NE555(2) are connected by diode VD1. When the switch S1 is not pressed, the internal transistor of the NE555(2) is turned on, the 3 pin outputs a low level, and the diode VD1 is turned on to make the voltage on the capacitor C1 zero, and the NE555(1) timer cannot operate.
When the switch S1 is pressed, the switch S1 will generate jitter for a period of time, causing Ucc to intermittently charge C1, causing the output waveform of the NE555(l) to be unstable. However, due to the existence of NE555(2), during this time, the output of pin 3 of NE555(2) is low, and the voltage on capacitor C1 is zero through diode VD1, so NE555(1) can't work, so avoid Rabbit has the effect of jitter on S1.
When the switch S1 is reset, the negative pulse generated by the R4 and C4 differentiating circuits triggers NE555(2) to make the output change from low level to high level. At this time, VD1 is turned off, C3 is charged to C1, NE555(1) starts to oscillate, and a period in which the output negative pulse width is constant becomes a gradually broadened pulse train. This process continues until the voltage on C2 reaches (2/3) Ucc, the trigger of NE555(2) is reset, or C1 has not been able to charge to (2/3) Ucc before then.
With the development of the times, the consumption level of people is gradually increasing. At the same time, people's entertainment methods are beginning to diversify, especially for modern young people. As a result, different kinds of electronic products are starting to be in people's lives, and the booming Electronic Cigarette industry reflects this.
Described including the upper shell, the upper shell at the top of the smoke outlet, as described in the bottom of the upper shell with airway, described with the smoke outlet in the airway and also to match the upper shell, the lower part of the shell described the airway in the direction of the lower shell extension, as described in the lower shell near one end of the upper shell is equipped with oil mouth, described the lower shell with batteries, described at the bottom of the bottom shell has come in The air port is provided with an oil storage bin in the lower shell, and the air passage passes through the oil storage bin and is provided with a heating atomization bin at one end away from the smoke outlet. The utility model has beneficial effects: it can meet the smoking habit of different users, avoid the premature end of the use experience caused by excessive consumption of smoke oil, and indirectly prolong the service time and life of the product.
Refillable E-Cig Oem,Refillable Vape Pod,Refillable Vape Pen Oem,Refillable Mod Oem
Shenzhen MASON VAP Technology Co., Ltd. , https://www.cbdvapefactory.com