Presentation on theme: "A design by Phil Rice VK3BHR. Author Language & Web Site Marek SP7DQR Polish"— Presentation transcript:
A design by Phil Rice VK3BHR
Author Language & Web Site Marek SP7DQR Polish Aleksandr Buyevskiy Russian Patrick TK5EP French Volker SM5ZBS German
Pic Based design with software calibration. Low Part Count. Simple to use. Battery Powered. Locally available parts. Claimed measuring range: Capacitors - 0.0pF to about 0.1uF Inductors - 0.0uH to somewhere over 10mH All Thourgh Hole and NO SUFACE MOUNT
Small measurements are inaccurate, because of quantising error. Capacitors - 0.0pF to about 0.1uF Inductors - 0.0uH to somewhere over 10mH
A 16F628 PIC is used. This has internal comparator, which means the LM311 is no longer needed. Software calibration is used. The finished meter can be calibrated against "any" accurate capacitor within the range 100pF to about 10000pF.
Redrew schematic in ExpressPCB with Mouser Part numbers. Redrew layout with changes for new parts. Extracted Bill of Materials from the schematic. Upload to Mouser and make any changes for items you have. Print PCB layout and etch the circuit board (Iron on process). This is still a work in progress…