This circuit, which can be used as a shield, was found in Radio Electronics from the 90s. The operating circuit can be replaced by a lower voltage equivalent.
The frequency of this transmitter depends on the coil. For 100 turns the operation is in medium...
This circuit was found in an Argentine Radio Escuela Gráfica magazine published in the 1970s. The...
This circuit generates low-frequency sinusoidal signals. The variable capacitor is dual and the...