This is a very interesting circuit design to assemble. There are 4in1 amplifier module in a circuit board. 100W power amplifier using the TDA7294, for the VU meter uses IC LM3914. The tone control preamp uses the well-known IC 4558. The symmetrical power supply module also included in the PCB.
This is the 100 Watt power amplifier circuit based power amp chip LM3886. Single chip of LM3886 is able to generate power output up to 68W. In this 100W power amplifier circuit, the two of LM3886 are paralled to gain more powerful amplifier output. This amplifier can deliver about 50W into a 8-ohm speaker and… Read More »
Here is the 2 x 100W stereo power amplifier with STK4231II as the main amplifier component. This is a high power audio amplifier with dual output channel at 100W max for each channel. I think it is a very good amplifier because it has capability to deliver high stereo output power with only use a single… Read More »
This is a 100W RF amplifier built based on RF power transistor BLY94. Active components: BLY94 Coaxial cable length : K x Lambda / 4, where K = 0.66 for 50 ohm cable and K = 0.8 for 75 ohm cable. L1 = L6 = 2 turns / 1.5mm / 14mm L2 = L7 =… Read More »
Here is the circuit diagram of 100W audio amplifier which using power transistor BDW83D and BDW84D for the final amplification. It uses dual polarity power supply to work. Copyright belong to Smart Kit. The circuit should be seen like this: This is an exceptionally well designed amplifier, with a lot of power reserve, high fidelity,… Read More »
Here is the 100W RMS audio amplifier schematic diagram: This circuit is quite simple but will give you high quality audio output. Take a note that above diagram designed for single input and single output (mono system). For stereo system, you need to build two similar circuits.
This is a 200W power amplifier circuit project. The circuit features high power, good definition and very low noise. It delivers about 200 watts in 4 ohms loudspeaker: a 4 ohm speaker or two pieces of 8 ohm speakers in parallel. This 200W power amplifier using the complementary transistors of 2SC5200 and 2SA1943 as the… Read More »
This is the 220V / 200W lamp flasher circuit diagram. The frequency/speed of the lamp flashing can be adjust with the range of 1Hz to 5Hz. You can use the PR1 variable resistor (trimpot) to adjust the flashing speed. The duty cycle of lamp flashing can be adjusted using PR2 variable resistor.
The following diagram is an inverter circuit which will give you 220V AC 50Hz with maximum power output of 100W. This inverter built using transistors for both the square wave generator module and the amplifier module. Inverter Diagram: The Q1 and Q2 used generate square wave. Q5-Q8 amplify the signal and the transformer to increase… Read More »