Contents
p. 2Applic.
pp. 4-8

Selection
pp. 9-11

Products
pp. 12-87

1412 Series

GenRadproducts
pp. 50-87

ポリスチレンIndexp. 89

StablePolystyrene
可変キャパシタ
Decade Capacitor

p. 1 of 2

モデル1412-BC:
幅広いレンジの高分解能
Model 1412-BC: The
wide capacitance range
and high resolution of this decade capaciディケードキャパシタンスは研究・開発に
tance box make it exceptionally useful in both
非常に便利なツールです。キャパシタンス
laboratory and test shop. Owing to its fineの微調整ができるのでインピーダンスコン
adjustment of capacitance, it is a convenient
パレータと共に使用するキャパシタとしてvariable capacitor to use with an impedance
便利です。ディケードのステップにポリスcomparator. The polystyrene dielectric used
チレン誘電体を使用するこの可変キャパシ
in the decade steps is necessary for applicaタは、低誘電吸収で周波数特性が優れた
tions requiring low dielectric absorption andキャパシタンスと損失ファクタを必要とす
constancy of both capacitance and dissipation
るアプリケーションには必須の機器です。
factor with frequency.
Verification of calibration of LCR meters
LCRメータ校正の検証

Model 1412-BC Decade Capacitor

50pFから>1μF
50pF to > 1 μF

Capacitancemeasurement functions
キャパシタンス測定機能

分解能は1pF以上
Betterthan 1 pF resolution

Verification of calibration of multimeters
マルチメータ校正の検証

確度は of ± (0.5% + 5 pF)
AccuracyForcalibrating instrumentation
機器の校正

Lowloss, leakage, dielectric absorption
低損失、低漏洩、低誘電吸収

For decades of polystyrene capacitors and a variable air capacitors
capacitor with a linear ΔC of 100 pF and a resolution of better than
ディケードのポリスチレンキャパシタは二重にシールドされた容器に納められたエアーキャパシタを使用して1 pF provides continuous adjustment between the 100 pF steps ofare used, mounted in a double-shield box. The double shieldingいます。二重容器には２端子と３端子のキャパシタンスが備わっていて、端子間のキャパシタンス以外は同じ
the smallest decade.
provides 2-terminal and 3-terminal capacitance's that are the sameです。リニアリティΔCは100pF、分解能1pF以上の可変エアーキャパシタは最小ディケードの100pFステップ
except for the capacitance between the terminals. The variable airのキャパシタンス値を連続的に調整できます。
Figure 1
図１1412-BC可変キャパシタで使用している二重シールド
The double shielding used in the 1412-BC Decade Capacitor keeps
small. This capacitance is the difference between theCHG veryを非常に小さく保ちます。このキャパシタンス
はCHG
3-terminal and 2-terminal capacitance of the box; CLG is approx.
は３端子と２端子の差です。C
LGは約125pFです。
125 pF.

IET LABS, INC. in the GenRad Tradition534 Main Street, Westbury, NY 11590
60

Electronic cat/1482/09-15-03
www.ietlabs.com
TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988

Contents
p. 2Applic.
pp. 4-8Selection
pp. 9-11

Products
pp. 12-87

1412 Series

GenRadproducts
pp. 50-87

ポリスチレン

Index
p. 89

StablePolystyrene
可変キャパシタ
Decade Capacitor

p. 2 of 2

SPECIFICATIONS
仕 様
キャパシタンス:
Capacitance: 50 pF to 1.11115 μF in steps of 100 pF with a 0 toDielectric
誘電吸収:Absorption: (Voltage Recovery): 0.1% max.

100 pF variable air capacitor providing continuous adjustment withdivisions of 1 pF. Capacitance for 2- and 3-terminal connections differ by about 1 pF (CHG in Figure 1) CLC is approximately 125 pF.

損失ファクター:
Dissipation
Factor: 150 to 1000 pF, 0.001 max, at 1 kHz; over1000 pF, 0.0002 max, at 1 kHz.

最小キャパシタンス:
Minimum
Capacitance: 50 pF with all controls set at zero.

Dielectric:
Polystyrene for decade steps.
誘電体: ポリスチレン（ディケードステップ）
Accuracy:±( 0.5% + 5 pF) at 1 kHz for total capacitance including
確度:
50 pF minimum for the 3-terminal connection.
温度係数: Coefficient of Capacitance: -140 ppm/°C (nominal).
Temperature
周波数特性:
Frequency Characteristics: DC Cap/ 1 kHz Cap < 1.001. At
higher frequencies the increase is approximately ΔC/C = (fƒ/fƒr)². The
resonant frequency, ƒf r, varies from over 400 kHz for a capacitanceof 1 μF to 27 MHz for a capacitance of 150 pF when connections
are made to the front terminals. ƒf r is about 300 kHz and 70 MHz forrear connections and the same capacitance.

Insulation
絶縁抵抗:Resistance: 1012 Ω min.
Max Voltage: 500V peak, up to 35 kHz.
最大電圧:
端子:
Terminals:Four bindings posts with grounding link are provided
on the front panel. Two of the binding posts are connected to thecase and located for convenient use with patch cords in 3-terminal
applications. Access is also provided to rear terminals for relay-rackapplication.
形状:
卓上キャビネット、ラック取付用の金具あり。
Mechanical:
Lab-bench cabinet; brackets provided for rack mount.

大きさ:
Dimensions:0.89 cm H x 43.9 cm W x 15.3 cm D
(3.5" x 17.25" x 3.5")
Weight:
重さ: 3.9 kg (8.5 lb.) net, 4.6 kg (10 lb.) shipping.

Max
Operating Temperature: 65°C.
最高稼動温度:ORDERING
INFORMATION
オーダー情報1412-9410

1412-BC

Decade Capacitor

IET LABS, INC. in the GenRad Tradition
534 Main Street, Westbury, NY 11590

www.ietlabs.com
TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988
61