A

A

B

B

C

C

D

D

E

E

4

4

3

3

2

2

1

1

L1:

Wind 6 turns of solid wire on a pen or pencil that

is just under 1/2 inch in diameter. Remove the

wire from the pencil and spread the winding to

make a length of 3/4 inch. Solder C2 somewhere

near the middle of the coil.

1

2

3

TL431

Bottom

View

2N4416 Bottom View

The case lead should

be grounded.

case

gate

source

drain

D

S

G

+

SFM1 Copyright 1999-2001 LTJ Designs

1.5

Simple FM Radio by Andrew Mitz, LTJ Designs

A

1

1

Thursday, February 15, 2001

Title

Size

Document Number

Rev

Date:

Sheet

of

Q1

2N4416

L1

see text

R2
1K

C3A

70pf

C8
.001

L2

22uh

rfc

EPH1

High Z earphone

BT1

9v

C1B

10pf

C5

.001uf

C7

.005uf

R4
10K

C3B

140pf

C2

24pf

C1A

10pf

R3
1K

R6

100

S1

D1

TL431CLP

2

3

1

C6
.22uf

+

C9
22uf

16v

R5
1M

R1
470K

C4

330pf