On astable multivibrators, the duty cycle is usually fixed unless there`s a potentiometer in place, but even still with a diode in parallel with R2, you will only get a duty cycle less than 50%. Also, to ask a question in a new thread, youcan click here. I`ve only been dealing with electronics for about 2 years now. The other people on this forum are much more helpful. it becomes necessary to insert a diode in parallel with
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RB, cathode toward the timing capacitor. Another diode is desirable, but not mandatory (this one in series with RB), cathode away from the timing capacitor. Now the charge path becomes RA, through the parallel diode into C. Discharge is through the series diode and RB to the discharge transistor. This scheme will afford a duty cycle range from less than 5% to greater than 95%. It should be noted that for reliable operation a minimum value of 3kW for RB is recommended to assure that oscillation begins. That circuit is quite common. The circuit without a diode, but using the output at pin 3 is susceptible to changes in frequency and duty cycle with changes in voltage. It is a tiny bit simpler circuit than the conventional circuit with a diode, but I prefer not to use it because of its poor stability.
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
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The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
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This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
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