Astable Multivibrator

In a previous chapter, the use of a transistor as an electronic switch was discussed. This chapter will explore how one transistor can switch another. The diagram illustrates a pair of cross-coupled transistors. The input push buttons of the...

A relaxation oscillator utilizes two tubes, transistors, or other electronic devices, with the output of each connected to the input of the other through resistance-capacitance elements or other components to achieve in-phase feedback voltage. This electronic circuit employs positive...

To achieve a lower parts count than the two-transistor multivibrators, two LEDs can be alternately flashed using a 555 integrated circuit configured as illustrated in Schematic 2. A combination of a 2.2kΩ and a 47kΩ resistor is used to...

The MC74HC04 IC is a low cost CMOS Hex Inverter. I used this type mainly because, it is what I have, although you can use LS type but, with a little modification or exemptions. More: For 'HC' type: Always...

This plugin features a single 555 timer in astable mode. It is highly versatile and can be utilized for various applications, commonly serving as a clock signal generator for circuits. The configuration described produces a pulse frequency of approximately...

This circuit is activated when switch SW1 is pressed, grounding the base of transistor Q2. The pulse rate is approximately equal to 0.7 multiplied by the product of resistor R3 and capacitor C1. The described circuit features a transistor Q2,...