Hi I'm in the middle of making a frequency to voltage converter. I have an incremental encoder hooked onto my DC motor which spins at a max no load speed of about 3500 RPM (about 58hz).
I'm using the 16 pin package of the LM2917 freq to voltage converter IC, the data sheet for it is below:
https://www.electro-tech-online.com/custompdfs/2007/08/LM2907.pdf
My circuit is below, exactly as it appears on a breadboard:
**broken link removed**
I pumped 15V to VCC and had the incoder pulsing slowly (motor was turning slow), and the chip just heated up like crazy. I had VCC=5V and Vout just gave me 5V, so in other words VCC=Vout. Did I wire something wrong here? I think I've wired it according to "Minimum component tachometer" figure on page 8 of the data sheet.
Thanks
I'm using the 16 pin package of the LM2917 freq to voltage converter IC, the data sheet for it is below:
https://www.electro-tech-online.com/custompdfs/2007/08/LM2907.pdf
My circuit is below, exactly as it appears on a breadboard:
**broken link removed**
I pumped 15V to VCC and had the incoder pulsing slowly (motor was turning slow), and the chip just heated up like crazy. I had VCC=5V and Vout just gave me 5V, so in other words VCC=Vout. Did I wire something wrong here? I think I've wired it according to "Minimum component tachometer" figure on page 8 of the data sheet.
Thanks