In the figure we have a simple thermometer with NTC, using an analog current indicator. The adjustment is made in the trimpot and the power is done by batteries.
This circuit was found in Radio Electronics from the 90s. The CMOS integrated circuit is a PLL not...
This circuit was found in a Japanese publication in 1975. It provides 30 W per channel using the...
Depending on the value of C1, this oscillator can produce signals of up to 1 MHz. For a capacitor of 10...