Noise generator 2 frequency with ic 555

This is a simple noise generator circuit. An IC Timer IC 555 is a number of major equipment. Small circuit. Suitable for various test circuits.
Operation of the circuit is when the power supply to the circuit. It will give birth to high frequency by using a circuit IC1 to a multi-state Devices Bill Brett Foster. The frequency with which R1, C1 and C2. The frequency will be out in three legs. And will be expanded with the IC2 output pin out of 5 in order to drive the speakers. The high-frequency sound. But when the switch S1, capacitor.
C1, which continue to cycle in a manner parallel to the C2 value higher density. IC1 will give birth to low-frequency out of pin 3 to IC2 then drive the speakers. This circuit can cause the audio source has two frequency.

Led light movement the audio signal with LM358- IC 4017

This is a circuit that features a running pace with a changing voice, the tiny microphone. For a frivolous fun.
Operation of the circuit when a signal is to change the MIC1 audio signal and power amplifiers to be stronger. The LM358 IC1 / 1 and IC1 / 2 classified as a circuit that changes the electrical signal of the audio signal to be square, to control the operation of pin 14 of IC2. IC2, which is connected to the circuit. The output pin voltage is out sort of leg 3, 2, 4, 7, 10, 1, 5,6, 9 and 11. On IC2 controls the signal LED lights chasing each step on the moon. The number of square wave signal to the pin 14. The R8 help restrict the current flowing through the LED accordingly.

Music box versatile using IC M3481

This is a multi-purpose integrated music box that interesting, because an IC package. Is a simple and affordable.
The main function of the circuit is the device of the circuit is IC1. This is a sound generator IC. The Christmas season. Its musical all 8 music. When the power supply LDR1 the exposure will cause voltage drop across R1 is enough to make IC1 work has output to stimulate pin 11 and pin 12 to stimulate pin B of Q1. Q2 and the current expansion drive that will be the speaker. While the circuit work if the switch S1 connected to the unique music tracks and so on, but if S1 is not connected. Circuit will play all the songs. If the switch S2 connected to the cycle When there is no light will stop play immediately. But if the switch S2 is not connected to music and no light will not stop until the song is finished playing.
Switch S3 is responsible for selecting music on, press 1 once one moves to music. The VR1 is also a tone control if VR1 is less resistance will be reduced to a lower tone. And the music will slow down play with. The R6, C3 is responsible for smooth sound more R7 forward to control the feedback stability of dc output of the circuit.

Mini-stereo circuit using ic TDA2822

This circuit stereo power amplifier. By use integrated circuit number TDA2822 within be model Dual Amp give power watt at 1W 1W bandwidth expansion rates at 40dB 120kHz use power supply since 1.8V to 15volt and use current 6mA feed power supply 9volt reach the circuit C7 will perform filter fire level smoothly then go to feed power supply give with IC1 at 2 input signal pin will on the left and right that come in to change VR1 and VR2 for fine decrease popularity level has of the sound already coupling change C1 and C2 from that time pass by reach input of IC1 at 7, 8, 6 pin and 5 respectively from that time a signal had that to enlarged then go out 1 pin way.

Which be output of the channel a signal on the left and pin 3 ways are output of the channel on the right by a signal output of left channel and right channel will change C3 and C4 signal coupling reach a loudspeaker. By have R1, C5 and R2 C6 perform eradicate the noise of each the channel goes out.
When using the power supply 9 volt into this circuit.VR1 and VR2 to adjust the signal level of the right and left, the pin 7 and pin 6 of IC1.The amplifier IC1 is out of the output pin 1 and pin 3, through the C4 and C5 coupling signals to the left and right speakers.The C6, R1 and C7, R2 is to reduce noise.

Tap tempo circuit using ic cd4011

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.
MC34063      ULN2003         74HC595         IRF3205        TDA2822      TDA7293

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. The frequency determined by the C3, C4, R5 and R6 signal will be expanded to drive the Q2 and Q4. But Q4 will not allow signals to pass the time. Q3 to control because it will work again in Q4. And Q5 connected with acts amplifiers to speaker, with a VR2 adjust the volume.


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Freescale MC33810 Datasheet, IC for Auto Engine Control

Herein article is aMC33810 datasheetfromFreescale Semiconductor, an eight channel output driver IC which is designed for automotive engine control applications. And the following picture shows the simplified application diagram of the MC33810.

The IC built of four integrated low side drivers which are suitable for driving fuel injectors, solenoids, lamps, relays, etc and four low side gate pre-drivers which function as ignition IGBT gate pre-drivers or general purpose MOSFET.

Find detailed MC33810 datasheet, an IC for Automotive Engine Control Applications here in pdf filetype, 2.01Mb/35 pages (source: hqew.net).

TI's LM5017: 100 V, 600 mA Synchronous Step-down Regulators

TI expands its product line of high-voltage load point through the LM5017, a 100 V, 600 mA synchronous step-down  regulators  with integrated high side and low side MOSFETs. The constant-on-time (COT) control scheme employed in the LM5017 requires no loop compensation, provides excellent transient response, and enables very low step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers.

A peak current limit circuit protects against overload conditions. The undervoltage lockout (UVLO) circuit allows the input undervoltage threshold and hysteresis to be independently programmed.

The LM5017 is available in LLP-8 and PSOP-8 plastic packages.

Applications
• Smart Power Meters
• Telecommunication Systems
• Automotive Electronics
• Isolated Bias Supply

 

Features
• Wide 9 V to 100 V Input Range
• Integrated 100 V, High and Low Side
• No Schottky Required
• Constant On-time Control
• No Loop Compensation Required
• Ultra-Fast Transient Response
• Nearly Constant Operating Frequency
• Intelligent Peak Current Limit
• Adjustable Output Voltage from 1.225
• Precision 2% Feedback Reference
• Frequency Adjustable to 1 MHz
• Adjustable Undervoltage Lockout (UVLO)
• Remote Shutdown
• Thermal Shutdown

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