This interesting transistor circuit has several effects and an included amplifier. The circuit is monophonic and powered by standard batteries. The number of keys can be changed.
This circuit allows controlling a LASER pointer with an input logic signal. R has 10 ohm for 3 V...
Figure bellow shows how the 4510 can be cascaded for counts higher than 10. The circuit shows the...
This type of circuit is interleaved between a microphone and a transmitter in order to improve the...