12W Audio Amplifier Circuit Based On TDA2006

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Project is built around TDA2006 PENTAWATT package. TDA2006 provide high output current and has very low harmonic cross-over distortion. Further the device incorporate- rates an original (and patented) short circuit protection system comprising an arrangement for automatically limiting the dissipated power so as to keep the working point of the output transistors within their safe operating area. A conventional thermal shutdown system is also included. The TDA2006 is pin to pin equivalent to the TDA2030.

Specifications:

18V 2amps Single Supply
Power supply up to 18 VDC
Output power 12 W @ 4 Ω, 8 W @ 8 Ω
TDA2006 provides high output current
Has very low harmonic and cross-over distortion
Short circuit protection/Thermal shutdown system in IC
Terminal pins for connecting audio signal input
Header connector for connecting potentiometer (POT) for volume adjustment
Screw terminal connector for easy power supply input and speaker connection
Power-On LED indicator
Heatsink for IC
Four mounting holes of 3.2 mm each with nut and stud
PCB dimensions 51 mm x 63 mm

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Stereo Tape Head Pre-Amplifier Circuit

STEREO TAPE HEAD PRE-AMPLIFIER (1)

The circuit is built around a popular Sanyo’s stereo head preamp IC LA3161. Low electrical signals from the playback heads are fed to pins 1 and 8 of IC1 via DC decoupling capacitors, respectively. Components between pins 2 and 3 and pins 6 and 7 provide adequate equalization to the signals for a normal tape playback.
Specifications:

Power supply: 9 ~ 12 VDC @ 20 mA
Output power: upto 200 mW
Input Resistance – 100 KΩ (Typ), Load Resistance – 10 KΩ (Typ)
Low noise, good ripple rejection owing to the on-chip voltage regulator
Berg pins for connecting power supply, input and output
Power-On LED indicator
Four mounting holes of 3.2 mm each
PCB dimensions 49 mm x 38 mm


STEREO TAPE HEAD PRE-AMPLIFIER SCHEMATIC

STEREO TAPE HEAD PRE-AMPLIFIER (3)


PCB LAYOUT

STEREO TAPE HEAD PRE-AMPLIFIER (2)

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STEREO TAPE HEAD PRE-AMPLIFIER (1)

Audio Oscillator Generator Adjustable 115Hz-1Khz

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Audio Oscillator project simply produces audio tones for use in the range of 115 Hz to 1 KHz.  This kit is a must for audio technicians and experimenters alike.

Input : 6 VDC @ 325 mA
Output : Speaker, 8 Ω / 0.5 W
Range 115 Hz to 1 KHz Selectable by Onboard PRESET
ON/OFF slide switch for power supply
Terminal pins for supply voltage and speaker output
Power-On LED indicator
Four mounting holes of 3.2 mm each
PCB dimensions 39 mm x 42 mm

 

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2 Tone Audio Oscillator Circuit

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2 Tone Audio Oscillator is a simple circuit which will generate audio tone on the press of a button.  This circuit can be very useful as test equipment for audio equipment or as a signal source in an audio input.

Input – 5 ~ 12 VDC @ 100 mA
Output – Speaker, 8 Ω / 0.25 W
Two switches produce / play different frequencies
Frequencies 1.2 KHz, 700 Hz
Terminal pins for supply voltage
Power-On LED indicator
Four mounting holes of 3.2 mm each
PCB dimensions 47 mm x 46 mm

 

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3 Tone Audio Oscillator Circuit CD4001

3-tone-audio-oscillator

3 Tone Audio Oscillator is a simple circuit which will generate audio tone on the press of a button. This circuit can be very useful as a test equipment for audio equipment’s or as a signal source for  an audio input.

Input – 12 VDC @ 100 mA
Output – Speaker, 8 Ω / 0.25 W
Three switches produce 1.2 KHz, 725 Hz and 325 Hz
Terminal pins for supply Voltage and speaker connection
Power-On LED indicator
Four mounting holes of 3.2 mm each
PCB dimensions 42 mm x 48 mm

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3 Tone Musical Bell with Audio Amplifier

 3 TONE MUSICAL BELL

3 Tone Musical Bell project is built around BT66T (UM66) IC driving LM386 audio amplifier to give that extra punch.

 

  • Input 6 VDC @ 200 mA
  • Output 8 Ohms 0.5 W Speaker
  • Terminal pins for supply voltage and speaker connection
  • Power-On LED indicator
  • Onboard push to ON switch
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 35 mm x 54 mm

SCH

Light Sensitive Audio Oscillator

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Light Sensitive Audio Oscillator project is a fun loving project which will create different sound effects depending on the light falling on the sensor (LDR).

Features

  • Supply input 5 ~ 12 VDC
  • Output 8 Ohms, 0.5 W Speaker
  • Terminal pins for supply voltage and speaker connection
  • Power-On LED indicator
  • PCB dimensions 38 mm x 44 mm

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Water Level Sensor Alarm

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This small water sensor alarm circuit makes a loud warning sound when a water  sensor detects a quantity of water.

Features

  •  Input : 9 VDC @ 40 mA
  •  Output : Buzzer
  •  Berg connector for voltage supply input
  •  Power-On LED indicator
  •  Four mounting holes of 3.2 mm each
  •  PCB dimensions 35 mm x 32 mm

 

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Dark Sensitive Switch Circuit Based on Single Transistor

j001

Dark Sensitive switch project based on single BC547 transistor, Relay operates when light that falls on the LDR, goes below a set point. It’s very simple and low cost dark sensitive switch required few components.

Features

  • Input : 12 VDC @ 55 mA
  •  Relay output : NC – C – NO
  •  Onboard preset to set the level
  •  Power-On LED indicator
  •  Relay On LED indicator
  •  Screw terminal connector for easy relay output connection
  •  Four mounting holes of 3.2 mm each
  •  PCB dimensions 44 mm x 40 mm

 

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TB6600 Based 4.5A Bipolar Stepper Motor Driver

 tb6600-bipolar-4-5a-stepper-motor-driver-2

Bipolar stepper drive board described here has been designed around TB6600HG IC. The TB6600HG is PWM chopper type single chip bipolar sinusoidal micro-step stepping driver. Maximum  Load 4.5A, Supply 10V to 42V DC.

 Features

 

  •     Based on Single chip and Second chip for auto half current control
  •     Suitable for Nema17, Nema23, Nema34 bipolar stepper motors
  •     Suitable for 4Wires, 6 wires and 8 wires stepper motor.
  •     Forward and reverse rotations available
  •     Selectable Phase (Micro-step) drives 1/1, 1/2, 1/4, 1/8, and 1/16
  •     Maximum Input supply 42V DC Minimum Input supply 10V DC
  •     Output current 4.5Amps
  •     Output Fault Monitor LED indicator
  •     On Board Power LED indicator
  •     On Board step pulse input indicator
  •     Standby auto half current reduction circuitry onboard
  •     Built in Thermal shutdown (IC)
  •     Built in under voltage lock out (UVLO) circuit (IC)
  •     Built in over current detection (ISD) circuit (IC)
  •     Large capacitor to handle inrush current

 

Applications

 

  •     Robotics
  •     Large format Size Printers
  •     CNC
  •     Routers
  •     3D Printers
  •     Machine Automations
  •     Camera Pan Tilt Heads
  •     Slot Machine
  •     Vending Machine

 

Heat-sink and Thermal Shutdown

The board has current  sense resistors and these resistors has been set as per maximum load current 4.5A, If you use lower current motor, please set the PR1-Preset ( Potentiometer) to the required  level for the motor. At maximum current load TB6600 IC will overheat in some time and a RED LED turns on. This LED goes off once the temperature falls to a safe operating level.

 

Micro Stepping

A 4way DIP switch is used to set the micro step modes (Full, Half, Eight, Sixteenth), please see the table for Micro step settings. DIP Switch settings should be changed when power is off so the correct selection is active at power up.

 

Step Pulse

Minimum positive duty cycle of the input step pulse should be 2.2us and required 5V (TTL) signal. A positive going pulse on the step input activates a step operation.

 

Current Settings

Average drive current can be set using a Preset (On Board PR1 Potentiometer). CN7 (CT) onboard connector   is provided  to measure the voltage to set the motor current (torque). Voltage range to set the torque   0.3V to 3.5V

 

Cautions

Never connect or remove supply wires, motor wires, or input interface when power is on, this can cause damage to drive.

Switch Off the Power to set the Micro stepping

Before using this drive, please have proper information about stepper motors, Motor impedance, Inductance and other specs.

 

Inputs

All Inputs are optically isolated to prevent the device for any kind of noise, short circuits.

 

 Enable: Required 5V DC input, Set high Input disabled the drive, Set low input Enable the drive

Dir.: Required 5V DC input, Set high Input CW Rotation, Set low input CCW Rotation, Direction of the motor depends how stepper motor has been wired.

CLK: Step Pulse required 5V DC TTL pulse

 

Outputs

4 Wires, 6 Wires, 8 Wires Motors can be used with this drive in bipolar mode.On board LED for Alert

 

4XDIP SWITCH

SW4 (LATCH): ON=Automatic Return if Thermal Shutdown Or Over Current Detection OCCURS

SW4 (LATCH) : OFF= On Fault condition required power on/off

 

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