TT6061A

CIRCUIT IDEAS touch signal is connected to the counter/ decoder via a resistor and clock input CK is connected to the counter/decoder via a frequency generator. Line frequency signal is taken through R4 at pin 2 of IC TT6061A. At zero crossing, the triac (BT136) triggers to drive a 200W bulb. The 6.8V power supply is taken directly from mains through resistors R1 and R3, diode D3, capacitor C4, and zener diode and fed to power-input pin 3 of the IC. Capacitors C1, C2, and C3 connected between touch input pin 4 and touch plate Pin Assignments of IC TT6061A Pin No. 1 2 3 4 5 6 7 8 Pin name CK FI VDD TI CI NC VSS AT Function description System clock input 50Hz line frequency Power input pin for VDD Touch input Sensor control input Not connected Power input pin for VSS Angle-trigger output TOUCH DIMMER K. KRISHNA MURTY I VED DWI S.C. B y simply touching this touch dimmer you can increase the light intensity of incandescent lamps in three steps. The touch dimmer is built around 8-pin CMOS IC TT8486A/TT6061A specifically manufactured for touch dim- second touch, the bulb gives medium light. At the third touch, the bulb is driven fully. Another touch puts off the light. Since the IC is highly sensitive, use a long wire to connect the IC to the touch sensor. The circuit uses minimum external components. For touch plate, you can use a simple copper plate of 1cm×1cm or mer applications. Initially, when mains switch is ‘on,’ the bulb is ‘off’. Now, if you touch the touch plate, th...