>>> Oscillator & Amplifier Power Supply <<<

  Shown in figures 1, 3, 5 is the circuit diagram of the B, H, L version of the DCAPS12 power supply that provides 12 VDC power for up to 3 VHF/UHF Amplifiers and 1 VHF/UHF Oscillator simultaneously.  Also provided by the DCAPS12 is a tuning voltage output (V-T) for frequency control of the VCO2C, VCO1K, and VCO2K voltage controlled oscillators.  The tables shown next give information on the V-T output for all 3 power supply versions and the resulting change in frequency  for a 1 turn adjustment of R1.

Model Number V-T Min. V-T Max. Volts / Turn
DCAPS12B 0 18 0.90
DCAPS12L 0   9 0.45
DCAPS12H 9 18 0.45

Table 1, V-T Output

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VCO P/N DCAPS12B DCAP12L DCAPS12H
VCO1K 37.4 18.7 18.7
VCO2K 64.9 32.45 32.45

Table 2, Change in frequency (MHz) for 1 turn adjustment of R1

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Figure 1, DCAPS12B Circuit Diagram

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Figure 2, DCAPS12B Printed Circuit Board Assembly

FOR ONLINE ORDERING, A U.S. SHIP TO ADDRESS IS REQUIRED.  INTERNATIONAL ORDERING INFORMATION IS AVAILABLE BY CLICKING ON THIS HYPERLINK, INTERNATIONAL

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Figure 3, DCAPS12H Circuit Diagram

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Figure 4, DCAPS12H Printed Circuit Board Assembly

FOR ONLINE ORDERING, A U.S. SHIP TO ADDRESS IS REQUIRED.  INTERNATIONAL ORDERING INFORMATION IS AVAILABLE BY CLICKING ON THIS HYPERLINK, INTERNATIONAL

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Figure 5, DCAPS12L Circuit Diagram

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Figure 6, DCAPS12L Printed Circuit Board Assembly

FOR ONLINE ORDERING, A U.S. SHIP TO ADDRESS IS REQUIRED.  INTERNATIONAL ORDERING INFORMATION IS AVAILABLE BY CLICKING ON THIS HYPERLINK, INTERNATIONAL

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