I’ve been very busy, music and all. Back soon!
I’ve made an AC 12-0-12 power supply, and rigged up the signal generator and oscilloscope. Looking good.
Free Bluetooth speaker with my new Yuntab E706 Tablet
Added 100K pot, top right, to adjust the square wave amplitude:
Around 1 volt peak-to-peak going to the amplifiers:
But the square wave output from the signal generator is 12 volts, and can’t be adjusted:
A bit of a game with the case, and sticking buttons, but got there in the end:
Step 1 – connect 9 volt battery – Good. Nothing getting hot. Set jumper to 100-3Khz
Step 2 – connect sine wave output to Lepy 2024A amplifier – Good. All knobs working
XR2206 – needs testing now
And waiting for the oscilloscope kit