Wiring And Schematic

Showing posts with label radio. Show all posts

Thursday, September 4, 2014

24 W BTL or 2 x 12 W stereo car radio power amplifier

General Description:

The TDA1515BQ is a monolithic integrated class-B output amplifier in a 13-lead single in-line (SIL) plastic power package. The device is primarily developed for car radio applications, and also to drive low-impedance loads (down to 1,6 Ω). At a supply voltage VP = 14,4 V, an output power of 24 W can be delivered into a 4 Ω BTL (Bridge Tied Load), or, when used as stereo amplifier, it delivers 2 × 12 W into 2 Ω or 2 × 7 W into 4 Ω.

Features:

flexibility in use − mono BTL as well as stereo
high output power
low offset voltage at the output (important for BTL)
large usable gain variation
very good ripple rejection
internal limited bandwidth for high frequencies
low stand-by current possibility (typ. 1 µA), to simplify required switches; TTL drive possible
low number and small sized external components
high reliability.
The following currently required protections are incorporated in the circuit. These protections also have positive influence on reliability in the applications.
load dump protection
a.c. and d.c. short-circuit safe to ground up to VP = 18 V
thermal protection
speaker protection in bridge configuration
SOAR protection
outputs short-circuit safe to ground in BTL
reverse polarity safe.

Circuit description:

car radio power amplifier mono

car radio power amplifier stereo

Monday, August 25, 2014

TDA1519 2 x 6 W stereo car radio power amplifier

GENERAL DESCRIPTION:

The TDA1519 is an integrated class-B dual output amplifier in a 9-lead single in-line (SIL) plastic medium power package. The device is primarily developed for car radio applications.

Features:

Requires very few external components
High output power
Fixed gain
Good ripple rejection
Mute/stand-by switch
Load dump protection
AC and DC short-circuit-safe to ground and VP
Thermally protected
Reverse polarity safe
Capability to handle high energy on outputs (VP = 0 V)
No switch-on/switch-off plop
Protected against electrostatic discharge
Compatible with TDA1517 (except gain).

Circuit diagram:

TDA1519 2 x 6 W stereo car radio power amplifier

Sunday, August 17, 2014

Build a 140W amateur radio linear amplifier 2 30Mhz Wiring diagram Schematic

Build a 140W amateur radio linear amplifier 2-30Mhz Circuit Diagram. This inexpensive, easy to construct amplifier uses two MRF454 devices. Specified at 80 W power output with 5 W of input drive, 30 MHz, ana 12 Vdc.

140W amateur radio linear amplifier 2-30Mhz Circuit Diagram