This circuit was found in a documentation of the 80s, having didactic purpose. For R1 values between 10k to 1M can be used. Transistors are general purpose types.
This circuit consists of a control panel for motorcycles and cars monitoring various functions such as...
We found this CMOS circuit in a publication from the 1980s. What this circuit does is to flash two LEDs...
L1 is formed by 80 turns of wire 28 in a ferrite rod to tune medium waves range. The circuit can...