Quantity   Component name
6 × 1N4004 Discrete Semiconductors / Diodes and Rectifiers
2 × 300 ohm 0.25W metal film resistors, 1% tolerance
2 × 3300 ohm 0.25W metal film resistors, 1% tolerance
2 × 10 ohm or 4.7 ohm 1W resistors
4 × 2200 uF Electrolytic Capacitor, 35 volts or higher
2 × 10 uF Electrolytic capacitors, 35 volts or higher
4 × 0.1 uF (100 nF) Ceramic disc capacitors
1 × LM317 Power Management ICs / Linear Voltage Regulators and LDOs
1 × LM337 Power Management ICs / Linear Voltage Regulators and LDOs
1 × 16VAC wallwart adapter (15 to 18VAC can be used) Single AC, 15-18V, 2.1 mm female connector. See the project details for sources.
1 × 2.1 mm male power connector