IC MonoStable Multivibrator Circuit Diagram

Basic LM555 Timer CIRCUIT

Part List
C2 = .01uf
IC1 = LM555 Timer
SWI = n.o. momentary switch
R1 and C1 determine lenght of
out put pulse where  t = R1 x C1
and R1 is in ohms and C1 is in farads .

by Tony van Roon

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Audio Lm 3909 IC-conduction tester Circuit Diagram

This tiny conductivity tester works with LM 3909. The tester makes a beeping sound if the resistance between the test probes between 0 and 100 O lies. Due to the volume of the beep, the resistance between the test probes can be determined.

Audio Lm 3909 IC-conduction tester Circuit Diagram

Parts List

     R1 = 1 k
     C1 = 10 uF
     C2 = 100 nF
     LS = Loudspeaker 12 to 16 Ω
     IC1 = LM 3909

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Solar Charger use IC LM317 Circuit Diagram

 At this point is a Solar Charger Circuit to is used to charge information Acid otherwise Ni-album batteries using the solar energy power. The circuit harvests solar energy to charge a 6 volt 4.5 Ah rechargeable battery in favor of various applications. The stallion has Voltage and Current supervision and terminated voltage restrict sour facilities.

Circuit uses a 12 volt solar panel and a changeable voltage supervisor IC LM 317. The solar panel consists of solar cells each one rated on 1.2 volts. 12 volt DC is presented from the panel to charge the battery. Charging current passes through D1 to the voltage watchdog IC LM 317. By adjusting its Adjust pin, output voltage and current can subsist regulated.

VR is placed amid the adjust pin and ground to provide an output voltage of 9 volts to the battery. Resistor R3 confine the charging current and diode D2 prevents discharge of current from the battery. Transistor T1 and Zener diode ZD conduct yourself having the status of a stop rotten switch at what time the battery is ample. Normally T1 is rancid and battery gets charging current.

After the terminal voltage of the battery rises over 6.8 volts, Zener conducts and provides station current to T1. It followed by turns on education the output of LM 317 to prevent charging. If you want to specific voltage / current output , you can replacing ZD on the circuit above.

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Amplifier Using BEL1895 I.C Circuit Diagram

Here is a very simple and easy to use audio amplifier using I.C BEL(Bharat electronics limited)1895 , a very common IC. This circuit can run on 3V to 6v , making it easy to use in pocket amplifier. Cost is under 25/-

Parts list:

BEL1895 I.C (DIP8),
C1 = 470uF/10V,
C2 = 1000uF/16V,
C3 = 220uF/10V,
C4 = 100uF/10V,
C5 = 4.7uF/10V,
C6 = 47pF,
C7,C8 = 1uF,
R1 = 47Ohm,
R2 = 470Ohm,
R3 = 100K,
R4 = 1Ohm,
R5 = 10K V/C,
speaker, etc…
Total cost is around 20-30 rupeess(INR) or 0.6USD. 

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Uninterrupted Power Supply in an IC Project

The Uninterrupted Power Supply in an IC . Cymbet Corporation announced the availability of the EnerChip™ CC CBC3105 smart solid state battery. The CBC3105 combines the award winning EnerChip battery with integrated input power conversion, battery management and regulated output capabilities. The Cymbet EnerChip™ CC is a smart rechargeable solid state battery Uninterrupted Power Supply (UPS in a Chip™) that provides power backup to microelectronic devices when main power fails. The EnerChip CC provides power supply monitoring and switches over to the internal solid state backup battery when the supply drops below a set threshold. The EnerChip CC product family can provide anywhere from several hours to several weeks of backup time.

 Simple Uninterrupted Power Supply in an IC Circuit Diagram

 

The CBC3105 is an ideal solution for design engineers who need a compact device to back-up a Real Time Clock or Microcontroller during power failure where coin cell batteries or super caps will not work due to size, reliability, no battery doors, no battery replacement, battery disposal issues, or need for life-of-product power. The CBC3105 uses surface mount/reflow solder assembly and is RoHS tested-compliant. 

The EnerChip CC device family can accomplish all this in a footprint as small as the CBC3105 4mm x 5mm x 0.9mm package that is priced as low as $0.50 in high volumes. The EnerChip CC CBC3112 and CBC3150 provide even more energy storage in similar small footprint packages. The CBC3105 can be purchased at Avnet, Avnet Abacus, Avnet Asia, Digi-Key, Mouser and Farnell.

Easy-to-Use Evaluation Kits for Power Backup Applications

Cymbet makes it easy to design EnerChips into new products by offering two EnerChip CC evaluation kits:

• CBC-EVAL-05 EnerChip CC Evaluation Kit which contains everything needed to test EnerChip 12uAh and 50uAh thin film batteries, EnerChip CC CBC3112 and CBC3150 batteries with Integrated Battery Management, and to test multiple batteries in parallel. This kit will also include a CBC3105 evaluation board for experimenting with this device.
• CBC-EVAL-06 Real-Time-Clock Evaluation Kit: includes a Microcrystal NV2123 Real-Time Clock device and a CBC3112 EnerChip CC for battery backup. This kit also includes a Windows based Graphical User Interface to set the clock & test operation in RTC back up and count-down modes.

Visit Cymbet at Design West/ESC Booth 2330 for UPS in a Chip Demos

At booth 2330 at Design West/ESC 2012 at the San Jose Convention Center March 27-29, 2012, Cymbet will demonstrate tiny footprint power backup solutions that give designers the ability to create optimized products. By providing all the functions of a UPS system in a single chip, the EnerChip CC batteries enable a new class of products that utilize life-of-product energy storage.

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TV Remote Jammer Using 555 IC Circuit Diagram

The TV remote control transmits television signals as pulses of frequency around 37.5kHz. Each button on the remote control is pressed or equivalent has a pulse signal codes. This remote transmits pulses of the circuit block of the same frequency as the remote to your TV confuse decoding the transmitted signal.

The heart of the circuit is the 555 timer IC in astable circuit works mode.The output series of pulses at a frequency of 18 kHz to 48 kHz by simply adjusting the 5K potentiometer. What you do is adjust the potentiometer until frequeny jives to its distance from the TV or until the signal is ignored by television.

 TV Remote Jammer Using 555 IC Circuit Diagram

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Function Generator Circuit Diagram using NE566

Simple circuit function generator that generates square wave and triangular or sawtooth. The frequency is determined by R and C1. For the sawtooth wave output is on pin 4 and the voltage of 6 V, while for the square wave output is on pin 3. The function generator circuit uses only one 566 and can be connected to output amplified audio. The frequency is set by potentiometer R2.

 Function generator circuit using NE566 Circuit Diagram

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LED Flasher with the LM3909 IC Circuit Diagram

Hi friend! to day i share a useful circuit this is a LED Flasher with the LM3909 IC. I suggest a flashing lightweight that is very simple. Because we use figures packages of  IC LM3909. Advantage of them is utilised rather than of the initial circuit. Using a lot of transistors effortlessly. By you add a capacitor and a resistor for each one. The directed is blinking very quick.

In supplement, it has very reduced power consumption, for example, a 1.5V electric battery could drive the directed blinks. And furthermore current is only 0.3mA. you so use it many months. 

LED Flasher with the LM3909 IC Circuit Diagram

Components

C1 = 100uF electrolytic capacitor    

IC1 = LM3903 led flasher IC    

LED1 = Red LED  Battery = 1.5 Volt AAA

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Elementary IC MonoStable Multivibrator Circuit Diagram

Build a Elementary IC MonoStable Multivibrator Circuit Diagram. This is a simple Multivibrators have two distinct electrical states, an output "HIGH" state and an output reduced" state giving them either a stable or quasi-stable state counting upon the kind of multivibrator. One such kind of a two state pulse generator configuration are called Monostable Multivibrators.

Elementary IC MonoStable Multivibrator Circuit Diagram

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