874-VC: Difference between revisions
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|image=GR 874-VC Close-Up.jpg | |image=GR 874-VC Close-Up.jpg | ||
|caption=eneral Radio 874-VC Variable Capacitor | |caption=eneral Radio 874-VC Variable Capacitor | ||
|series=874 | |series=GR-874 | ||
|introduced=1954 | |introduced=1954 | ||
|discontinued=1961 | |discontinued=1961 | ||
Latest revision as of 23:04, 12 May 2024
The General Radio 874-VC Variable Capacitor was introduced in Catalog N (1954) and remained available through Catalog Q (1961).
The Type 874-VL is a general-purpose variable capacitor used as a tuning element in resonant line circuits, matching transformers, and baluns at low frequencies. Can be used as a general purpose shielded capacitor at lower frequencies. The 874-VL is very similar to the Types 1602-P3 and 1607-P3 variable capacitors used as low-frequency susceptance standards, all are based on the 1420 series of variable capacitors.
The Type 874-VC was replaced by the locking version Type 874-VCL from Catalog R (1963) on.
Specifications
- Capacitance Range: 14 to 70 pF at low frequencies; at high frequencies see curves in data sheet
- Capacitance Variation: Linear
- Dial Calibration: 0 to 100 not in capacitance
