6

Input

monitor

Vo

Ω

51

Ω

PS2601

Insert resistor

of 200 k

Ω here.

Test Circuit 4

(Emitter Follower)

Input

monitor

Vo

Input

monitor

Vo

Ω

51

Ω

PS2601

Insert resistor

of 200 k

Ω here.

Input

monitor

Vo

of the phototransistor. See Test circuit 4 and Test circuit 5. Graph 4 and 5 show their input and output waveforms.

Test Circuit 5

(Emitter Grounded)

Graph 5

Up

: Input

0.2 V/DIV

DOWN : Output

2 V/DIV

(50

µs/DIV)

Graph 4

Up

: Input

0.2 V/DIV

DOWN : Output

2 V/DIV

(50

µs/DIV)