Tasel

This inverter circuit is very useful for low load application such as emergency light, radio, or DVD player. With transistors as main active component, please take more attention when you assemble this 100 W inverter circuit. Power source of this circuit just 12V DC, but can produce about 100W at 220V AC with simple assembling [...]

High-performance amplifier. Ultra low distortion but high voltage DC while operated. Using two on-board 6.5A fuses, just cause this circuit is capable of delivering around 300W of music power into 4Ω, each fuse carries around 4.4A RMS or higher.

Using IC 4001, 4027, NE555, and CA3130, this circuit can convert 24VDC to 220VAC 300W. A pairs of MJ15003 or 2N3773 as the last active components before drive the pulse into the transformator.

This inverter circuit is very useful for low load application such as emergency light, radio, or DVD player. With transistors as main active component, please take more attention when you assemble this 100 W inverter circuit. Power source of this circuit just 12V DC, but can produce about 100W at 220V AC with simple assembling [...]

Based on super hetero dyning principle. The circuit using 2 RF oscillators. The frequencies of all oscillators are at 5.5 MHz. The first RF oscillator consist of transistor T1 (BF 494) and a 5.5MHz ceramic filter. The 2nd oscillator is a Colpitt’s oscillator accomplished with the help of T3 (BF494) and inductor L1 shunted by [...]

A simple step up DC to DC converter with a maximum draw of about 800mA. Applying a op-amp as a square wave oscillator to trig an inductor and another op-amp in a feedback loop, provides a 24V power source for many uses.

Power amplifier settled on HEXFET IRF9540 and IRF540 which probably produce 65 W at the output. This circuit is simple and have a good audio quality. For thermal static, use heatsink on Q8, Q10, Q11, Q12, and Q13.

The circuit of this 30W audio amplifier produce a clear audio output quality. The circuit module doesn’t have any improvement. With Darlington pair in transistor TIP141 and TIP146. This transistor need heat-sink or better temperature.