Two divide counter circuit using IC-4027
When you want to decrease the frequency in 2 digital times circuits or Divide Frequency by 2 counter. I advises use IC 4017, because seek easy cheapness can be usable good various. Related Links digital counter circuit More circuits about IC 4017 Frequency Divider circuit Digital frequency divider 10 Hz Timebase by IC 4017 Squarewave Oscillator by IC LM339 XR2206 Function Generator Cmos Logic Clock Oscillator by Ic 4011 X tal Oscillator Frequency by 74LS04
Simple audio alarm with transistor
This is a Simple audio alarm circuit using transistors only. Although it is a circuit that is very old. But we will try to build on it as well.       The work of the circuit when press switch S1 will have the electric current flows through R1 go to pick the electric charge at C1 at a pin B of Q1 as a result, will have electricity pressure then until make Q1 work.       When Q1 work Q2, as a result work with, be make have current flow through pin E come out the way pin C of , Q2 change R4 …
Sine wave oscillator low frequency-constant amplitude
In a general Sine wave oscillator circuit, often to use the thermistor and Incandescent lamp. It can use upset the output of circuit that fixed value. The resistance of the thermistor dependent on temperature and as a result of the voltage drop across it. From the slow response of the thermistor, it makes to properties of temperature against resistance is not linear. Which is like with that do not distortion value in this oscillator circuit. Sine wave oscillator low frequency In this circuit, we use a zener diode in performs this function to limit a voltage. Then, the bridge circuit …