. Electronic apparatus for biological research . Frame WAW Frame (a) (t.) Figure True variable capacitors These are useful for the accurate control of variable-frequency filters and oscillators. The most common size is variable up to 500 pF and may be had 303

---

Size: 2445px × 2045px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity