Recording circuit employing AC biasing system
US4333114A · kind A · utility
1Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1979 |
| Grant date | Jun 1, 1982 |
| Priority date | — |
| Expiry date | Dec 4, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording head, a resistor, a capacitor and another resistor are connected in series to form a bridge circuit arranged to satisfy the condition Ra.multidot.Rb=L/C, wherein Ra and Rb represent the resistance values of the resistors, respectively, L represents the inductance value of the magnetic recording head, and C represents the capacitance value of the capacitor. A recording signal is applied across a first pair of opposite junctions of the bridge circuit, and an AC biasing signal to be used in recording the recording signal is applied across a second pair of opposite junctions of this bridge circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.