 ECG923 ECG218 Negative voltage regulator (15 volts) using an ECG923 or ECG923D precision regulator IC. For metal can applications, where Vz is required, an external 6.2-volt zener should be connected in series with the regulated output. R1 is 3.65 ohms and R2 is 11.5 ohms for a ±5% fixed output (courtesy GTE Sylvania Incorporated). |
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