This timer was found in Japanese documentation from the 1960s. The transistor can be replaced by an equivalent and the relay must be of the sensitive type with voltage according to the power supply.
This circuit divides frequencies of up to about 7 MHz by 10 and by 100. The input signal must be...
This sensitive circuit produces na outpu signal when a body is detected by the sensor. The circuit...
This variable has its frequency controlled by voltages V1 and V2. The circuit is based on...