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This circuit is basically a 8W inverter circuit . The  circuit continues to be intended to drive an 8W fluorescent lamp from a 12V power supply, utilizing an cheap inverter primarily based on a ZTX652 transistor. The inverter will operate from supplies in the variety of 10V to 16.5V, obtaining efficiencies up to 78% as a result causing it suitable for use in on-charge devices like as caravans / mobile homes / RVs and also periodically charged devices like as roadside lamps, camping lights or outhouse lights etc. Other capabilities on the inverter are that it oscillates at an inaudible 20kHz and that it contains reverse polarity protection.  8W Fluorescent Lamp Inverter based ZTX652 Circuit Diagram  Download the 8W fluorescent lamp inverter application note: » Download Download the ZTX652 datasheet: » Download

                     Above circuit diagram is a easy, simple and cheap switching voltage regulator which has capability to deliver adjustable voltage output range of 1.8V to 32V and static electric current of 3A. This regulator use adjustable regulator IC of LM317HV and a power PNP transistor of 2N3792. The LM317HV is adjustable 3-terminal positive voltage regulators capable of supplying in excess of 1.5A over a 1.2V to 57V output range. This electronic component exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Also, the LM317HV is packaged in standard transistor packages which are easily mounted and handled. LM317HV Features: Adjustable Output Down to 1.2V Specified 1.5A Output Current Line Regulation Typically 0.01%/V Load Regulation Typically 0.1% Current Limi...

I have previously shown how to calculate the values for the sine table: http://www.blogspot.com/2016/01/generation-and-implementation-of-sine.html I have also shown how to implement SPWM in PIC16: http://www.blogspot.com/2016/10/generation-of-sine-wave-using-spwm-in_10.html Now I will show how to implement feedback for SPWM. Due to various limitations in PIC16, such as ADC speed, instruction time and the ALU, it is extremely difficult, if not impossible, to calculate in real time the values required for feedback in sinusoidal pulse width modulation (SPWM). Thus, to implement feedback, a different approach must be used. That approach would be to retrieve the values from a sine table that contains the duty cycle values for a specific duty cycle. Here is one sine table I used, for example: const unsigned char sin_table[416]={ 0, 16, 32, 47, 62, 77, 91, 103, 115, 126, 136, 144, 151, 156, 160, 162, 163, 162, 160, 156, 151, 144, 136, 126, 115, 103, 91, 77, 62, 47, 32, 16, //65% 0, 17, 33, 49...