| 摘要 |
1. The invention concerns a threshold transmitter of revolutions consisting of power-supply block, discriminator block, transmitter block and signalising-regulating block, characterised in that discriminator block (3) has input discriminator (5) supplied by diodes (D3, D4) on the positive side and by diodes (D5, D6) on the negative side, and to the input discriminator (5) are connected in series: overflow discriminator of set threshold (6) and time delay discriminator (7).<IMAGE>
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