The phasor is the ray weapon that we see in many science-fiction films. The characteristic sound can be imitated with this circuit found in Radio Electronics of the years 90.
With a 1 500 uFcapacitor this timer can reach times up to one hour. The capacitor must be of good...
This circuit that draws 1 out of 8 LEDs was found in an 80's American documentation. The circuit...
November 2016 - Texas Instruments' new TLV8802 nano-power operational amplifiers for wireless...