Ideas

Ideas

some ideas about the functions:

• either for signal processing or for control
• either in continuous time (analog) or discrete (digital) and from one another and vice-versa
• linear or non-linear

Signal processing

Notes

converters vs filters:

• converters seek to maximize energy transfer between input signal and output signal
• filters seek to remove energy from signal. The energy to be removed is decided at by the designer as unwanted under reasons specific to each design (anti-aliasing, noise reduction, x-talk removal, blockers, ...)

Convertors

* A2D:
    * voltage to digital (most often simply refered to as `ADC`)
    * current to digital
    * time to digital (TDC)
* D2A
    * DAC
* A2A
   * voltage to voltage: buck, boost, sepic, AC/DC, ...
   * current to voltage: TransImpedance, ...

overview in below table

input\output	voltage	current	delta time	frequency	digital	R	C	L
voltage	DCDC, DCAC, ACDC	transconductance, V2I	VTC	V2F	ADC
current	TIA	current mirror	?	?	i-ADC
delta time	integrator	?	pulse shrink/spread, delay	?	TDC, timer
frequency	F2V	?	?	PLL, DLL, ...	FDC
digital	DAC	i-DAC	PWM?	PWM	DSP	dpot
R
C								gyrator
L

filters

* linear: LP / HP / BP ...
* non linear:
    * deadband
    * hysteresis
    * rate limiter
    * saturation
    * ...

maths

* abs value
* sign
* sqrt
* summation
* exponential
* gain block
* log10
* min / max 
* product
* greater than / lesser than
* derivative
* integral

Control Processing

logic

* and / or / xor / ...   

    * [fuzzy logic Zadeh operator](https://en.m.wikipedia.org/wiki/Fuzzy_logic#Fuzzy_logic_operators) `AND(X,Y)` == MIN, `OR`== MAX; `NOT(X)` == 1-X

* if then else

events

* edge triggered
* flip flop: SR/JK
* zero cross detect / - to + / + to - or ZCD
* time delay

signal routing

* look-up tables (many to many)
* DEMUX (1 to many)
* MUX (many to 1)
* switch (1 to 1)

Conversion to electricity

Energy	Effect	Device
Thermic	Seebeck effect	type-K
Thermic	Seebeck effect	TEG
Thermic	Peltier effect
Thermic	Thomson effect
Light	Photovoltaic	c-Si
Light	Photovoltaic	a-Si
Light	Photovoltaic	OPV
Light	Photovoltaic	DSSC
Light	Photoelectric	LED
Light	Photoelectric	laser
Light	Photoelectric	photodiode
Light	Photoelectric	gas discharge
Chemical	Battery	Li-ion
Chemical	Battery	NiMH
Chemical	Battery	NiCd
Chemical	Battery	NiCd
Chemical	Battery	Fuel cell
Chemical	Photo-electrode	pH
Chemical	Photo-electrode	oRP
Chemical	electro-chemical	3 lead cell
Chemical	electro-chemical	2 lead cell
Thermal	Pyro-electric
	Tribo-electric
Cinetic	piezo-electric	microphone
Cinetic	piezo-electric	buzzer
Cinetic	?	dynamo
Magnetic	?	hall
Electro-Magnetic	?	antenna

Resistance dependant

• Light
• Strain

Capacitance dependant

*MOXFET