This be simple bounceless switch circuit, In the character electronic switch a kind is one. That be of good quality tall and low noise convenient for the digital. If switch usual apply to digital circuit like to to get into trouble promise disturb easy. It make the circuit works can make a mistake. This circuit […]
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The led light running circuit generally can not adjust the speed of running. Cause dull monotony. Resulting in an idea to build this circuit up. This circuit can adjust the speed of the led light as needed. Makes this circuit can be used more versatile. Operation of the circuit is divided into two parts: frequency […]
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This circuit will have an effect than Tap the rhythm circuit other because the whistle is giddy, which vividly than usual knock. You can also adjust the speed with 10-40 strokes per minute. Operation of the circuit, we will be divided into three main parts of the schedule, the frequency generator, the control and amplify […]
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This is a siren sound generator circuit. Which is less expensive and can create simple. The IC1 is using CD4011 (Digital Nand Gate) and the IC2 is CD4046. Operation of the circuit, IC1 is a clock frequency 1 Hz.(Frequency adjusted by the value of R1 and C1.) Then it pluse IC1 regtifier through diode D1 […]
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This circuit can be used to time delay for the load, To be connected to the relay output to run after a specified time. Which during this time. Can be adjusted by changing the R1 and / or C1. The current of circuit is limited by type of relay that use. Figure 1 Time delay […]
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Today we lets to play simple digital circuit. It is an One shot touch switch control. I use IC-4011 digital cmos is base of circuit. It is set form as flip-flops. The Logic “HI” at output when Your finger touch pad and is time delay for 3 second. Which we can determined this pulse time […]
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We use a simple oscillator circuit in very many projects. I like to use a inverter logic gate since it is easy and cheap. But we do not use it directly. Mostly I use IC4011 nand gates since includes for separate four positive logic nand gate on a single silicon chip. Enough for general use […]
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The sound of insects such as crickets, cicadas, resulting from flutter briefly. We can use a multivibrator to connects as sound generator circuit to imitate these insects sound. Some electronic clock alarm tone also sounds similar to these insects. As Figure 1 is simple clock alarm sound generator that can assemble on a breadboard right […]
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This is simple circuit that we makes in hobby time or toys for my son but really uses. It will have sound alarm when morning like a normal clock alarm with lighting sensor same clock. We use a IC-4011 CMOS only one and a few components also can generate pulsating tone like a general clock. […]
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We can use a CMOS nand gate or inverter gate and two transistors into the current controlled oscillator circuit (CCO). In Figure 1 use two inverters are connected together as a astable multivibrator circuit. Figure 1 the normal astable multivibrator CCO circuit. If the output of N1 is “0”, and C1 will start be charged […]
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This circuit uses the integrated circuit CMOS number IC 4011 pretend Square Wave Oscillator , which touch buffer change output (which compose Complementary pair of transistors) for a loudspeaker next by bass keen in the sound can control with potentiometer or 10 K ohm when we wasp the circuit suits power supply as a result , be , sound generator get , and in other words we can use to are Continuity Tester by use probe 2 reach instead of itch knock the password there. In addition Input pin , that still no use of , gate CMOS every a pin join with negative supply for feed prevent all noise. Related Links Electronic test equipment Circuit Test Circuit More circuit
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This is the Transistor tester circuit into PCB. When your project do not works, the tester electronic parts or component be what need very much.
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Here is the tone generator circuit,it is small size. I use IC digital Cmos 4011 quad NAND gate. Simple Tone Generator Circuit This will cause another NAND gate to pulse oscillator which will drive another gate to output a 1.3KHz tone. The transistor provides drive for the 8 ohm speaker. The IC 4011 ‘s Input pin 1 for Control output tone generator, so logic “Low” don’t have tone but logic “HI” it have tone sound at speaker. The capacitors C1 and C2 are determine tone frequency rate. And the resistors R3 is control sound volume,so it must have less than 180 ohm at 9 volt supply. Resonance generators by 4011 CMOS Gate This Resonance generators (oscillating sound generator) circuit, designed
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These are 3 simple bounceless switch circuits, In the character electronic switch a kind is one. That be of good quality tall and low noise convenient for the digital. If switch usual apply to digital circuit like to to get into trouble promise disturb easy. It make the circuit works can make a mistake. Simple Bounceless Switch Circuit using CD4049 This circuit uses integrated digital number circuit CD4049 Hex Inverting Buffer. The circuit works model RS flip-flops make a signal comes out to have tall certainty. The equipment adds just also 2 resisters just only. The detail is other , see in the circuit has sir. In addition, we also can build this circuit with other digital ICs such as
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This Tempo tap circuit will have an effect than Tap the rhythm circuit other because the whistle is giddy, which vividly than usual knock. You can also adjust the speed with 10-40 strokes per minute. Operation of the circuit, we will be divided into three main parts of the schedule, the frequency generator, the control and amplify signals. The timing is IC1a, IC1b is a device to build up the frequency. This frequency is determined by R1, R2, C1, C2 and VR1. VR1 will be controlled by frequency And the frequency will be set of Q1, which works to affect Q3 Q1 Q3 to work intermittently The frequency generator is IC1c, IC1d frequency generator to drive out to the speakers.
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This is Dry Cell Battery Charger Circuit. That can use charger battery get that about 12 hour. When apply to power supply 9 volt the equipment that fix in the circuit use for size battery AA. If use the size C or D should devalue of Resistor RX down be 68ohm and should not lead battery come to serial while voltage in cell battery lower 1.6V. The Comparator Circuit with (IC741) control Gate output from Pulse Oscillator at use the integrated circuit CMOS 4011 change Transistor that do infront charger battery until voltage tall 1.6V Comparator Circuit more make LED Flasher warn know for protect Charger battery expire. The next time is if friends have Dry Cell Battery that use
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This circuit uses the integrated circuit CMOS number IC 4011 pretend Square Wave Oscillator , which touch buffer change output (which compose Complementary pair of transistors) for a loudspeaker next by bass keen in the sound can control with potentiometer or 10 K ohm when we wasp the circuit suits power supply as a result , be , sound generator get , and in other words we can use to are Continuity Tester by use probe 2 reach instead of itch knock the password there. In addition Input pin , that still no use of , gate CMOS every a pin join with negative supply for feed prevent all noise. Related Links Electronic test equipment Circuit Test Circuit More circuit
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IF you want the small circuit two LED Flasher, I show this circuit. The important part of the circuit is IC 4011 again, I used gate of IC 4011 (see image). IC wired as an astable multivibrator generating a 50% duty-cycle square wave at about 1Hz frequency. Two LEDs are flasher to alternate. To change value C1 and C2 for other flasher ratio. Detail more, Please read in this image circuit. See video to test this circuit on breadboard. From circuit below it lower light LED I think this circuit better. This simple circuit uses NAND Gates to alternately flash two led’s. The two 47uF capacitors determine the flash frequency. It is a good idea to use a decoupling capacitor
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This is Simple clock sound effect circuit using IC4011 nand gate digital CMOS IC for oscillator as tone generator. Then to transistor driver to speaker.
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I would like to introduce the concept of a two AC delay circuits.
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