Electric OU: More on Oscillations: Relationship of FG Drive Offset to MOSFET Switching
Or: Why a simple 555 timer cannot produce all the effects of the Ainslie circuit. The complete circuit schematic is available for download here: www.mediafire.com For the negative gate drive, low heat mode which does not turn a mosfet fully on…. the 555 timer must produce a pulse that is _more negative_ than the main supply battery. That means it cannot be powered off of the main battery in a simple manner. My solution is to “float” the timer’s power supply. But this doesn’t work for a positive going pulse from the timer… because there isn’t the required _negative_ component that keeps the oscillations going. In this video I show the relationship between the amplitude and offset of the FG drive pulse, to the oscillations and the state of the mosfets. By carefully “tuning” the offset and the amplitude of the FG’s output, one can get the Q2 oscillations to happen along with a partially on Q1 mosfet. Again… this reproduces another aspect of the Ainslie DATA. Unfortunately it is ignorance which has caused her to misinterpret this data and what is happening in her circuit. This video got kind of long so I didn’t show what the 555 timer does. With the simple 555 circuit that I use, one cannot control the “offset” in the same way that the FG can. But I have installed the Secret of DPDT on TarBaby’s clock board, so that I can go from a strict negative-going drive to a strict positive-going drive with the mere flick of a switch, live and on camera. I’ll illustrate this in …