| 摘要 |
PURPOSE:To attain automatic tracking adjustment by constituting a voltage setting circuit of an on-vehicle radio receiver with plural input terminals connected respectively to output terminals of an OR gate circuit and a voltage generating circuit outputting a voltage set corresponding to the said input terminal when a signal is inputted to the input terminal. CONSTITUTION:The voltage setting circuits 10-12 are provided with four power generating circuits 13a-13d corresponding to number of reception frequency band divisions and comprising a variable resistor connected to a +B power supply. Then switch devices 15a-15d are connected respectively to an output terminal 14 outputting a variable voltage, and the switch devices 15a-15d are constituted to be controlled switchingly via control sections 17a-17d by inputting a gate signal from OR gate circuits 9a-9d to input terminals 16a 16d provided corresponding to the number of divisions of the reception frequency band. The output terminal 14 of the voltage setting circuits 10-12 provided with voltage generating circuits 13a-13d set in this way is connected to a correction capacitor 6 of the corresponding tuning circuits 1-3.
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