Electronic & semiconductors devices - Intrinsic Semiconductor
ne = nh = ni
- The number of free electrons or holes in an intrinsic semiconductor is ne = nh = AT3/2 (child's Law)
- For an n-type semiconductor ne nh = ni
- Current density

- Electrical conductivity
= ne (m + m)
Voltage Regulator
- Voltage drop across R = E - E0
- Current through R, l = lL +

Transistor connection
Common emitter connection current gain

- Common base current gain

- Input resistance,

- Output resistance

- Effect collector load R = R||R =

- Current gain

- Voltage gain A =

- Relation between a and b

Logic Gate
OR Gate
- Boolen expression Y = A + B
AND gate
- Boolean expression A . B = Y
- Boolean expression Y =

NAND gate

- The Boolean expression for NOR functions

- De Morgan's Theorems


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