Relay type four channels (2-4 channels adjustable) rotary switch type audio signal switching input control selection board

Plastic handle switch version: The switch has a card hole to adjust the gear, which can be 2 gears or 3 gears or 4 gears.

The case has 2 sets of inputs, just set the switch to 2 levels adjustable (switch can only be screwed once).

The case has 3 groups of inputs, just set the switch to 3 levels adjustable (switch can only be unscrewed twice).

The case has 4 groups of inputs, just set the switch to 4 levels to adjust (the switch can only be unscrewed three times).

Otherwise, when only 3 sets of inputs are used, but the switch is adjusted in 4 levels, one level is empty.

In the same way, when only 2 sets of inputs are used, but the switch is adjusted in 4 gears, the second gear is empty.

The advantage of the plastic handle switch is that it can select gears and can be suitable for different chassis input signal groups. It is more convenient for you to install the machine. Many finished machines choose this, and the normal durability is no problem.

The 2mm thick double-sided gold-plated PCB is used to give the most direct and fidelity switching of the audio source. The board is stereo dual-channel.

For those who are pursuing Hi-End, they may be brooding about the performance of the analog switch. This board uses relay switching to meet the almost demanding requirements of low distortion, low resistance, and wide frequency band.

The power supply voltage is single AC12-15V. DC12-18V input can also be selected.

Switch board size 49mmx46mm, main board size 107mmx46mm

The panel mounting hole of the switch knob is about 10mm, and the maximum height of the relay main board is about 20mm.

The circuit of this board is very simple, you can understand it by looking at the board, so we no longer provide a circuit diagram, only a component list.

Friends who buy PCB can work normally with the component number. Friends who are not required by circuit diagrams, please do not buy.

In the small signal state, only the relays that are sealed and packaged and filled with special gas can be contacted and reliable.

The relay used in the finished product is a second-hand Japanese Panasonic, which is stronger in durability and reliability than ordinary domestic products.

It can switch 4 groups of CD/DVD/PHONO/AUX input, and is equipped with LED light-emitting tube for gear switching instructions.

Note：

① Many friends like to mount the board on top of the original PCB. This design can facilitate you to use small-sized capacitors without occupying height.

② CD / DVD / PHONO / AUX total 4 sets of input markers and LEDs, please adjust according to the scale of your case.

③ The switch on the board can select the gear (2-4 gears are optional). If you accidentally mess up the gear when you release the Luo mother, please adjust the gear pad by pressing the small number on the handle. The film is corrected back.You only need to unscrew the mother nut to see the gear spacer. Align the small hook on the spacer with the number on the gear hole and insert it.

④ This board can select one group from four groups of input as output, commonly known as 4 choose 1. You can adapt it to the reverse application, that is, choose 4 from one.

Package:

1pc Finished boards that have been installed and debugged (including cables)