Using diodes to make capacitor charging and discharging experimental circuits

1. The circuit is shown below.
2. Required components: 2 1 kΩ resistors, 1 red VD1 and 1 green VD2 light-emitting tube, 2 push button switches, 1 470μ electrolytic capacitor, 1 universal printing board, and 2 AA battery boxes.
3. Installation and experimental steps:
① Check the components according to the list.
②Install components and wire connections according to the schematic diagram.
③Connect the two battery boxes in series and connect them to the circuit.
④After the circuit is connected, press K1 first, and the red LED will light up, indicating the charging process. After releasing Kl, the power is disconnected. At this time, press K2 and the green LED will light up, indicating the discharge process.