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Decade Substitution Boxes
DECADE CONDENSER BOX. MODEL IBL-DCB-3
Application:
Precision variation of capacitance from 1000PF to 11.11mfd in steps of 1000PF. Very useful in any modern laboratory engaged in research, design and development of electronics circuits; such as AC bridges, amplifiers, oscillators, pulse circuits, filter networks, etc., by accurate substitution.
Uses polystyrene and polycarbonate capacitors of 1% tolerance, thereby ensuring, accuracy constancy and stability of operation.These capacitors have extremely low power factor. They are also non-inductively wound.
NB: Polystyrene and polycarbonate capacitors have very high insulation resistance. Consequently, they are high time constant of several hours.
Description:
Uses four switches mounted on front panel on which the capacitance values are printed. Sturdy in construction and housed in a strong wooden cabinet.
Specifications:
? Voltage Rating : 350V (DC)
? Dielectric : Polystyrene and polycarbonate capacitors
? Accuracy : 1%
Other Models:
IBL-DCB-1 : 100 pF to 0.111mFd, in steps of 100pF - 3 dials
IBL-DCB-2 : 1000 pF to 1.11 mFd, in steps of 0.001 mFd - 3 dials
IBL-DCB-3 : 100 pF to 1.111 mFd, in steps of 100 pF - 4 dials
IBL-DCB-4 : 0.001mFd to 11.11 mFd, in steps of 0.001 mFd - 4 dials
IBL-DCB-5 : 100 pF to 11.111 mFd, in steps of 100 pF - 5dials
DECADE INDUCTOR BOX. MODEL IBL-DIB-2
Application:
General purpose laboratory precision instrument whose inductance value can be varied from 1 mH to 10H, in steps of 1mH. Used in modern laboratories engaged in research, design and development of electronic circuits, filter networks, equialisers, tuned circuits, oscillators, frequency analysers, etc. in audio and low radio frequency regions, as a temporary substitution for finding optimum value of inductance.
Four decade ranges are used; 1mH ?9mH, 10mH ?90mH, 100mH ?900mH and 1H ?9H. Can be used upto 10Mhz.
Description:
Uses four special decade switches. Ferrite cores of appropriate permeability and special winding techniques are used for minimum stray inductance and capacitance.
Specifications:
Accuracy : 2% at 1KHz
Q : 25 to 150.
Other Models:
DIB-1 : 100 ?H to 99.9mH, in steps of 100 ?H - 3 dials
DIB-2 : 1mH to 999 mH, in steps of 100 ?H - 3 dials
DIB-3 : 100 ?H to 999.9 mH in steps of 100 ?H - 4 dials
DIB-4 : 1mH to 9.999mH in steps of 1mH - 4 dials
