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POWER METER FOR K4020
These LED meters are designed to visualize the output power of
the K4020 MOSFET amplifier.
In the normal configuration they indicate the power from 0.001W to
100W at 8 ohms and from 0.002W to 200W at 4 ohms. The
indicator consists of 12 LEDs.
For a "bridged" amplifier the meters may be switched in series,
providing an indication from 0.001W to 400W using 24 LEDs.
The different scales have already been provided (not illuminated,
so they are normally invisible) on the front of the K4020 amplifier.
The LED meters have additional LEDs which illuminate the
corresponding scale on the front side.
TECHNICAL SPECIFICATIONS
- 12 LEDs to indicate the output power
- 16 LEDs to illuminate the scale
- Scale:
8 ohms: 0.001; 0.005; 0.01; 0.05; 0.1; 0.5; 1; 5; 10; 50; 75; 100W
4 ohms: 0.002; 0.010; 0.02; 0.1; 0.2; 1; 2; 10; 20; 100; 150; 200W
Scale with bridge configuration (8 ohms):
0.001, 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, 15,
20, 40, 60, 80, 100, 150, 200, 250, 300, 400W
- Power supply: + and -40VDC from the K4020
Subject to modifications
ASSEMBLY
VERY IMPORTANT
- MOUNT ALL COMPONENTS AGAINST THE PRINT
- USE A SMALL SOLDERING IRON OF MAX. 40W
- USE THIN (1mm) SOLDERING TIN
- CARELESS ASSEMBLY WILL UNDOUBTEDLY LEAD TO
PROBLEMS
H4021-ED1-14
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