Refreshing system for dynamic memory
US4390972A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1980 |
| Grant date | Jun 28, 1983 |
| Priority date | — |
| Expiry date | Nov 24, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/406
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An oscillator of a pulse generator for use in a system for refreshing a dynamic memory comprises an operational amplifier having first and second input terminals and an output terminal, a thermistor connected between the first input terminal and the output terminal, a capacitor connected between the first input terminal and a ground, and four resistors. A first resistor is connected between the second input terminal and the output terminal. A second resistor is connected between the second input terminal and the ground. A third resistor is connected between the second input terminal and a power supply. A fourth resistor is connected between the output terminal and power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.