Stereo Tape Head Pre-Amplifier Circuit

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

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3 Tone Musical Bell with Audio Amplifier

  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

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Light Sensitive Audio Oscillator

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

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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TB6600 Based 4.5A Bipolar Stepper Motor Driver

  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

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