Quote from: Tomtech29 on May 12, 2015, 01:56:41 PM

.....

it's like for me this fits the 74HC00 is against the mosfet driver

photo # 2 I do not understand the configuration.

photo # 1 74HC132 instead of switching to 74Hc00

Hi Tomtech29,

In photo # 1 an SN74HC132 is used on the input (left hand side) like in Nick's link,
instead of a 74HC00.  The two ICs are fully pin-compatible, the difference is the HC132
includes Schmitt trigger circuits in all its inputs.
From data sheet: "Schmitt trigger inputs transform slowly changing input signals into
sharply defined jitter-free output signals."  This is a feature which may be or may not be
important in this circuit and this signal may have or may not have sharp edges, I suppose
when the PLL is in phase-lock, its VCO output signal can be sharp enough (the output signal
of the PLL IC (pin 4) drives the HC132 via a series (few kOhm) resistor or an inverted version
of this signal drives it via a Schmitt trigger 74HC14 IC.
In photo # 1 the next IC is a 74HCT04 and it seems not to have any special function other than
driving the input of the MOSFET driver TC4420, perhaps the presence of the HCT04 helps further
clean up of pulses.
The difference between a HC or HCT IC is the former works from 2V to 6V DC supply voltages
(with varying switching speeds of course) while the HCT is defined for working strictly at TTL levels,
DC supply voltage should be between min 4.5V to 5.5V max.

In photo #2 the input IC on the left is a 74HC00, followed by a SN74HC14 and then comes the
MOSFET driver. I referred to its schematic in this post here:
http://overunity.com/12736/kapanadze-cousin-dally-free-energy/msg449718/#msg449718

So is it still confusing?   

PS  Member MenofFather has included a link to this schematic
http://www.overunity.com/12736/kapanadze-cousin-dally-free-energy/dlattach/attach/147446/image//
which is very similar to the one shown here
http://overunity.com/12736/kapanadze-cousin-dally-free-energy/msg449723/#msg449723

Gyula

   From Data Sheet:
  "Schmitt trigger inputs transform slowly changing input signals into
sharply defined jitter-free output signals."  This is a feature which may be or may not be
important in this circuit and this signal may have or may not have sharp edges, I suppose
when the PLL is in phase-lock, its VCO output signal can be sharp enough (the output signal
of the PLL IC (pin 4) drives the HC132 via a series (few kOhm) resistor or an inverted version
of this signal drives it via a Schmitt trigger 74HC14 IC."
 
   Schmitt trigger inputs also may also convert any wave into a square wave?  I think that I read that somewhere.

   Gyula:  Thanks for the help.
                                             

 :)Thank gyulasun.
-presented in the form of a diagram is already clear for me and a description of what and how (super)
answer my questions:
instead of a 74HC00.  The two ICs are fully pin-compatible, 100% the difference is the HC132
includes Schmitt trigger circuits in all its inputs 98%.

preferable to try to use 74HC00n and 74HC14 at this moment so I just have.
compared to the schema.

Quotewhat is the difference between them(The 74HC132;74HC00)?

One speacialist say, that 74HC00 better, for that schematic. It faster.

Quote from: NickZ on May 12, 2015, 09:51:43 PM
  .....

   Schmitt trigger inputs also may also convert any wave into a square wave?  I think that I read that somewhere.
                                             

Hi Nick,

Yes it is correct, albeit it is level dependent (but it can be remedied by level shifters)
When the input wave's amplitude exceeds the (minimum) threshold level of a Schmitt trigger,
then the output of the Schmitt trigger changes its earlier output voltage level suddenly.
For a 74HC14 type Schmitt trigger the minimum threshold level from data sheet is
2.3 V with respect to the negative rail (Pin 7) when the input waveform is positive-going
and DC supply voltage at Pin 14 is 4.5 V. And when the input waveform is negative-going
(i.e. it decreases from a high value to a low value but still remains positive with respect to Pin 7),
the threshold level is 1.4 V and the moment this level is passed the output of the Schmitt trigger
changes again. The difference between the two (2.3 V - 1.4 V = 0.9 V ) is the hysteresis voltage,
this is a characteristic value for Schmitt triggers.

Gyula