This is a basic amplifier example using a transistor, you adjust RV1 to get the best results. You can get around about a gain of 50 (Vout/Vin) Schematic

Resistors in series Example 1 is 2 resistors in series In this example the total resistance (RT) = R1 + R2. So in the example above its 10k + 10k…

A bounceless switch example using a 7404 inverter.

This is a simple audio mixer using an fet. Schematic   Bill of materials QTY PART-REFS VALUE — ——— —– Resistors ——— 1 R1 6.8k 2 R2,R3 100k Capacitors ———-…

Schematic Parts List QTY PART-REFS VALUE — ——— —– Resistors ——— 1 R1 2M2 3 R2,R3,R5 1K 1 R4 4M7 Capacitors ———- 1 C1 100nf Integrated Circuits ——————- 1 U1…

A simple audio pre amplifier using some basic components Schematic   Parts List QTY PART-REFS VALUE — ——— —– Resistors ——— 1 R1 100k 2 R2,R3 10k Capacitors ———- 2…

This is a simple square wave oscillator using a 4011 NAND chip, you could of course use the TTL equivalent as well. Adjusting the resistor values will adjust the mark/space…

Description A very simple LED flasher circuit using an LM3909, these were great because you could connect a 1.5v battery up to them. They are hard to come by nowadays.…

Description This is an adaptation of the PSU that uses a 7805 and can supply higher current. You need to use an appropriate heatsink for the 2N3055 transistor, you could…

Description As you may recall the LM317 regulator is adjustable from 1.25 to about 35v. By adding 2 diodes you can drop the voltage slightly, about 0.6v of a voltage…