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Posts Tagged ‘TIP2955’

Spot lamp dimmer by LM555 and TIP2955

This circuit is DC Dimmer Circuit. By use IC LM555 be model Astable Multi vibrator. It is can change translate Duty Cycle with fining VR1 and VR2 be formed fine brightness level that want. The output of IC1 be formed limit load in something Oscillator and limit current of Q2 with. The D1 be formed protect Oscillate. For the Q1- TIP2955 and Q2 – MJ2955 should hold heat sink unless. Still can use S1 choose wasp a light bulb directly or Dimmer Lamp. For load of this circuit you can use 10A 12V topmost. Request a friend is entertained with Spot lamp dimmer by LM555 and TIP2955 , this please yes.

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65W Amplifier Class AB by LF351 ,TIP3055 and TIP2955

I like mini power amplifier less 100W because it is low cost nad easy to make project.
The 65W Amplifier Class AB,I use main part electronics are IC LF351 and thansisror two part TIP3055 and TIP2955.
The LF351 is a low cost high speed JFET input operational amplifier.
The TIP3055 and TIP2955 are small size but have high power.
This is circuit want Voltage supply +38V and -38V at current 3A min.
Have output power 65W to 75W at 8ohm speakers.

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30W Class AB amplifier by TIP2955 + TIP3055

To set the above amplifier up, set R1 to max and R12 to 0. After doing this successfully, power on the amplifier. Set R1 so that the measured output offset is between 30 and 100mV. Once set, adjust R12 slowly to achieve a quiescent current of around 120mA. Keep checking the quiescent current as the amp heats up as it might change due to voltage drop changes in the output devices caused by heat. The heatsinks should be 0.6K/W or less for two amplifiers.

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