9491

• UCREFRP Catalog Number: 9491
• Author: Snyder, D. E.
• Title: Electrofishing and Its Harmful Effects on Fish.
• USFW Year: 2003.
• USFW - Doc Type: Denver.
• Copyright Material: NO

A

Sine wave, alternating current (AC)

+

~
o 0
>

Time---'

C

DC, rippled, generated by partially
filtered, full-wave, rectified AC

+

~
o
>

o

Time---.

E

Half-sine, full-wave POC, generated by
unfiltered, full wave, rectified AC

+
~
o
>

o

Time---.

G

Quarter-sine, half-wave POC,
generated by controlled,
half-wave, rectified AC

+

11
o
>

o

Time---'

Square pulse train (POC)
(Coffelt's CPS@)

+

~
o
>

-

-

o

Time ---.

Fig. 5. Selected waveforms used in electro fishing.

B

SNYDER II

Direct current (DC), smooth, generated by
a battery or DC generator

~+
o
>

o

Time---'

o

Half-sine, half-wave pulsed direct current
(PDC), generated by unfiltered, half-wave,
rectified AC

+
en
-
o
>

o

Time---'

F

S

PDC

t db

+
~
o
>

quare , genera e y
f- interrupting smooth or rippled
f-
f- I
f-

o

Time ---.

H

Exponential POC, generated by
capacitor discharge

+
en
-
o
>

o

Time---'

J

DC

l

I

Hybrid pulsed direct current (PDC/OC),
POC on top of a DC base

+

~
o
>

o

Time----...