| 摘要 |
<p>The frequency-to-current converter for changing an electrical signal with periodic pulse-period into a current having an intensity dependent on the repetition frequency and used for feeding an indicator, is designed to raise the peak or max. current supplied to the indicator by the current amplifier commensurate with stability of the converter relative to the room temp. and supply voltage fluctuations. An emitter follower (15, 15) has its collector (25) output connected to the indicator input (19) as supply source. A voltage divider (27, 28) is connected so that a predetermined fraction of the voltage across the voltage reference (stabilising) Zener diode (9) is delivered to the base (26) of the emitter follower (14, 15).</p> |
