LM2917N8-Frequency-to-Voltage-Converter-National-Semiconductor-LM2917N8-p-The-LM2917-is-monolithic-frequency-to-voltage-converter-with-a-high-gain-op-amp-comparator-designed-to-operate-a-relay-lamp-or-other-load-when-the-input-frequency-reaches-or-exceeds-a-selected-rate-p-National-Semiconductor-LM2917N8-Frequency-to-Voltage-Converter