Regulated Low Voltage DC Power Pack, 5V Base_Octagonal Hand-cranked simple motor model on

Hand-cranked simple motor model on a 5

Large-format Boyle's Law apparatus with hand pump

the second universal-logic gate that complements the NAND for any digital-circuit construction

mounted on a swivel boss head fitting 18mm rods for secure angular placement on retort stands

supporting both additive and subtractive color demonstrations in optical box setups

Regulated Low Voltage DC Power Pack, 5V Base_Octagonal Hand-cranked simple motor model onRegulated DC power pack with a fixed +5V output, supplying clean low voltage current to introductory electronics, optics, and electrical circuit experiments in the classroom.