Voltage doubling circuitry

Thanks to the informations on Website about the power rectification, longstanding question has solved this morning.

The reason why the doubling rectifier circuitry is not so common is the danger of the too much and unnecessary current supply in spite of cheap transformer -less circuitry. Though I have an experience of electric shock under the condition of drinking alcohol, the current was mA revel. But bare in mind that the careless electric shock leads to the death by E-shock because of enough amount of current, the circumstances would be changed from hobby toy to dangerous industrial high voltage and high current power supply, also leading to danger on fire breaking out.

Additional description in the evening:

Ignition timings were checked on VW Super Beetle and EP82 TOYOTA Starlet, the former 1mm slower and the latter 7 degree faster, both of them were corrected firmly.

Thanks to my friend's assistance, the work of discharging bubble in brake line was closely performed and several bubble were eliminated obtaining sure and tight brake pedal touching.

Hitting portion on coil spring lower support of frontal strut R/L struts were ground several times eliminating unnecessary touching with broaden wheel inner surface.