RS_232_transceiver_operated_from__12__and__5_V_power_with_9_V_output

Published:2009/7/23 22:22:00 Author:Jessie | From:SeekIC

This circuit is useful in PCs where both + 12 V and + 5 are available. The +12 V is connected into one of the charge-pump capacitor pins, rather than the 12V output pin. Supply current decreases to about 9 mA, and -9 V output is available at pin 7.



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