The piezo experiment containing the Radio Shack piezo *element*, part number 273-073: The piezo element stores enough energy to flash the efficient LED about once or twice per day, producing several micro amps. Although, when we consider the average *DC* power, is a bit lower than 2V * 10 pA! There is it again, the ...
2009-10-15 13:53:11
This morning the Radio Shack piezo element part number 273-073 once again lighted the efficient red LED. This time, the LED was pointed at a while Styrofoam box a few inches away, and not at my eyes. The light was bright enough to easily see the red light reflection off the Styrofoam in the dark ...
2009-09-22 17:08:53
Last night the Radio Shack piezo element, part number 273-073, once again lighted the efficient red LED for ~ 2/3 of a second. This morning, ~ 8 hours later, the piezo element lighted the red LED again. ...
2009-09-21 15:00:12
Over past several days the Radio Shack piezo element, part number 273-073, has lighted the efficient red LED 3 times now. This is very interesting, as it requires significant time, at least a day, for the piezo element to recover from each discharge. The piezo element is inside a thick Hammond metal shield, connected ...
2009-09-20 14:50:25
I thought it would be interesting to map the records for the amount of peak power a highly shielded (both electrically & thermally) diode or piezo has produced thus far for a duration of at least one second. The horizontal axis is time in days beginning from the start of the research, which began in December of ...
2009-09-16 19:31:00
Today I connected the Radio Shack piezo element, part number 273-073, to a *highly efficient* red LED, part number TLCR5800. The piezo element was successful in lighting the red LED for ~ one second. I was in a dark room for ~ 10 minutes. I would describe the light intensity produced by the LED as being bright, and ...
2009-09-16 15:07:34
The 273-073 Radio Shack piezo has proven to produce a consistent DC current that fluctuates at a bit above 10 pA (typically between 2 pA to 25 pA). So late yesterday I disconnected everything from the piezo to allow it to recover, as the piezo has been shorted for a long time. Also, I shorted the piezo wires in ...
2009-09-09 15:31:40
The setup I've been using is the piezo (radio shack part number 273-073) inside a metal shield, two wires exit and go to the Keithley picoamp meter. The piezo has been producing 18 pA for awhile now, so I wanted to verify this. The Keithley was disconnected from the piezo. The piezo was then connected to a 4.7 uF low ...
2009-09-07 23:16:57
Over the past week I have tested the Radio Shack piezo, part number 273-073, to see if the piezo current/voltage polarity is due to temperature. Although temperature obviously has an effect on the piezo, it appears that the piezo polarity is not caused by temperature or temperature gradients. I have seen on numerous ...
2009-09-07 16:45:15
I noticed the DC current produced by the highly shielded piezo, radio shack part # 273-073, has been slowly increasing over the past few days and changes from ~ 10 pA to 30 pA DC. ...
2009-09-04 22:01:28