diff --git a/slave-daughter/slave-daughter-gieger.sch b/slave-daughter/slave-daughter-gieger.sch --- a/slave-daughter/slave-daughter-gieger.sch +++ b/slave-daughter/slave-daughter-gieger.sch @@ -6,7 +6,7 @@ - + @@ -2045,64 +2045,6 @@ BJT configuration in SOT23 package. MMBT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ->VALUE ->NAME - - - - - - - - - - - - - - - - - - - - - - - - - - - <b>TTL Devices, 74xx Series with European Symbols</b><p> Based on the following sources: @@ -2383,6 +2325,64 @@ Based on the following sources: + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +>VALUE +>NAME + + + + + + + + + + + + + + + + + + + + + + + + + + + @@ -2400,15 +2400,12 @@ Based on the following sources: - - - @@ -2428,6 +2425,8 @@ Based on the following sources: + + @@ -2442,6 +2441,31 @@ Based on the following sources: PWM Generator Gieger Tube and Detection +PING +Kroening: Here is a list of things to be done on this board. I made some minor adjustments to what we already had. +- PWM Generator +-Other Options +*555 Timer +(Needs to be fixed freq, but variable duty cycle) +*RC Relaxation Oscillator (uses the schmitt inverters) +*Software (I can control the duty cycle on the microcontroller) (this should be a last resort) +*Create a triangle or sawtooth wave (and then use a comparator) +*You design something new?!?! +- Select parts once schematic is complete +*Most choices are up to you. Make sure you take voltages into consideration. Use the excel file. +*Use the 100:1 ratio inductor +*You will need to use through hole ceramic capacitors to accomidate for both voltage and capacitance (it's ok if the HV (High Voltage) capactitors are huge when you pick them out. +- Layout Board +*Shorten the board considerably if possible. +*It is very important that you isolate the high voltage section from the rest of the board. Use a dotted line and clear markings in the silk layer to show this +*Keep the HV ground plane seperate from the other ground planes and keep a large isolation. Additionally keep traces very well spaced apart! +PING +- Try to design something for over voltage protection in case the voltage on our output drifts too high. This is a real concern. (IF YOU USE FAN6862HRTY, Then use the integrated circuitry from the data sheet instead) +*Use a voltage diviver with very high resistance (use Megaohm resistors) +*Then pass that refrence voltage through a comparator or op amp to check against another voltage that we set with another voltage divider. +*Then have the ouput of the compatator disable the PWM circuit if the HV gets too high. (think transistor on the power of the PWM circuit) +*Ask me if you are confused +- USE PART FAN6862HRTY @@ -2451,39 +2475,38 @@ Based on the following sources: - - - - + + - - - - + + + + - - + - - - - - - + + + + + + - + + + @@ -2497,17 +2520,6 @@ Based on the following sources: - - - - - - - - - - - @@ -2516,17 +2528,11 @@ Based on the following sources: - - - - - - - - - - - + + + + + @@ -2543,6 +2549,19 @@ Based on the following sources: + + + + + + + + @@ -2561,12 +2580,20 @@ Based on the following sources: - - - + - - + + + + + + + + + + + + @@ -2643,6 +2670,19 @@ Based on the following sources: + + + + + + + + + + + + @@ -2693,29 +2733,20 @@ Based on the following sources: - - - - - - - - + - - - - - - - - - - - @@ -2729,38 +2760,23 @@ Based on the following sources: - + - - - + + + - + - - - - - - - - - - - - - - - - - - - + + + + @@ -2821,38 +2837,44 @@ Based on the following sources: - - - + - + - + + + + + + + + - + - - - - - - - - - - -