1998 Jul 29

10

Philips Semiconductors

Product specification

VHF push-pull power MOS transistor

BLF378

Notes

1. American Technical Ceramics (ATC) capacitor, type 100B or other capacitor of the same quality.

2. The striplines L1, L3 to L13, L18 to L22 and L24 are on a double copper-clad printed-circuit board with glass

microfibre PTFE dielectric (

3. Semi-rigid cables L2 and L23 are soldered on to striplines L1 and L24.

L18, L19

stripline; note 2

43

Ω

6

× 13 mm

L20, L21

stripline; note 2

43

Ω

6

× 29.5 mm

R1

metal film resistor

4

× 0.4 W, 10 Ω

R2, R7

10 turns potentiometer

50 k

Ω

R3, R6

metal film resistor

0.4 W, 1 k

Ω

R4, R5

metal film resistor

2

× 0.4 W,

5.62

Ω in parallel

R8, R9

metal film resistor

1 W, 10

Ω, ±5%

R10

metal film resistor

4

× 1W,10 Ω in

parallel

R11

metal film resistor

1 W, 5.11 k

Ω

IC1

voltage regulator 78L05

COMPONENT

DESCRIPTION

VALUE

DIMENSIONS

CATALOGUE No.