"Well, that's all."
"The transistors are defective, the resistance has large errors, and there are also a few old germanium power transistors with unclear parameters."
When the Mingzhao headquarters went to untie the sack, the inferior components emitted a faint musty smell.
He picked up the casing of a germanium power tube; the writing on it was blurred, and the pins were rusty.
The mental energy subtly probed and sensed the fragility of the internal PN junction and the significant deviation in its parameters.
"Understood." Mingzhao's voice remained calm. "First, tidy up the area, the casing, and the battery. I'll figure something out."
...
"Is there still no movement from Mingzhao's side?" Chen Songnian asked, carrying an enamel mug, as he slowly strolled into the storeroom, feigning ignorance.
The warehouse manager immediately came over with a fawning smile.
"Don't worry about Chenggong. As you instructed, not a single piece of engineering plastic was given! Batteries? Forget about them. They only gave him some junk, which is enough to give him a hard time! I think his so-called Tianyin is a joke."
Chen Songnian took a satisfied sip of tea, a cold smile curving his lips.
"He's just a clown. He managed to pull off a little trick by using crooked methods, and now he thinks he's got the sky on his feet."
"Portable radio? Hmph! The core issues of transmission power and energy are the Achilles' heel. Director Wang is muddle-headed; let him mess around and wait and see. The exercise is fast approaching, let's see how he delivers those three prototypes then..."
He didn't finish his sentence, but the warehouse manager nodded and bowed knowingly, his eyes gleaming with malice.
"At that time, Mingzhao will have to get out of here completely."
Inside the laboratory, Ming Dynasty was completely unaware of the storms raging outside.
She was staring at a pile of treasures she had just salvaged from the junkyard on the table.
“Power amplification…heat dissipation is key…” Mingzhao picked up an empty can, his fingers brushing against the cold metal.
She took a file and began to carefully cut the sheet metal, her movements as precise as if she were carving an artwork.
She then used rivets to cleverly connect them to the old aluminum heat sink wires, forming a homemade radiator with multiple fins and an increased surface area.
"Comrade Mingzhao, is this... going to work?" Su Xian looked at the strange combination with some concern.
He was using a multimeter to measure each of the disassembled old battery cells and recording the parameters.
“Give it a try,” Ming Zhao said simply.
She carefully fixed the inferior germanium power transistor in the center of the homemade heat sink and then began soldering the circuit.
The circuit layout is extremely simple, abandoning the traditional bulky drive transformer and adopting a unique architecture with direct coupling and deep negative feedback, requiring very low voltage.
Mingzhao's spiritual power probed into the fragile crystal structure inside the power tube, guiding the weak bio-energy field to perform extremely dangerous field fine-tuning and heat conduction at several key nodes.
The voltage requirement is extremely low; this is a result of pushing the performance limits of existing components to the extreme through mental deduction.
Connect a simple power supply and apply a weak test signal.
A few seconds later, a miracle happened!
The distorted waveform on the oscilloscope suddenly became clear and stable, and the power output actually reached 120% of the theoretical limit of this inferior germanium chip. Meanwhile, the aluminum-coated heat sink was only slightly warm.
"It's done." Su Xuan muttered in surprise, his eyes filled with incredible admiration as he looked at Ming Zhao.
The challenges are even greater for the energy module.
Mingzhao's self-made device uses solar energy for charging.
Although it's good, the cost is huge, and the materials provided by those people are simply insufficient for conducting research.
Mingzhao cannot consider anything that cannot be mass-produced or whose costs cannot be controlled.
Mingzhao frowned as he looked at the messy battery parameters recorded by Su Xuan.
"Distributed management...dynamic balance..."
"What?" Su Xuan was still confused.
Mingzhao abandoned the traditional series approach and designed a dynamic balance circuit composed of simple diodes and resistors. He grouped the waste battery semiconductors with different internal resistances and voltages according to their parameters, connected them in parallel, and then connected them in series to form a group.
Each battery pack is equipped with an effective overcharge and over-discharge protection circuit.
"We also need contingency plans."
Mingzhao's gaze fell on the core of a hand-cranked generator in the corner.
By disassembling it and redesigning the gear pen and rectifier voltage regulator circuit, its power was doubled.
Then it is integrated into a groove reserved in the communicator housing, and a simple hand crank interface is added to the outside.
The outer casing? New plastics are out of the question!
Mingzhao turned his gaze to a pile of ordinary hard plastic boards.
A bold idea is proposed: to add a specific ratio of talc and rubber particles for filler modification.
In exchange for greater hardness and heat resistance, some toughness is sacrificed.
This required Su Xuan to conduct numerous manual mixing, heating, and pressing experiments.
Sweat soaked through his work clothes, and his fair hands were blistered from the heat, but he gritted his teeth and didn't utter a single complaint.
Time flew by amidst the wisps of solder and the flickering lights on the oscilloscope.
The laboratory lights often stay on until late at night.
On the table... three black square boxes gradually took shape.
The night before the exercise, a torrential downpour began.
Mingzhao and Suxuan are conducting final joint testing on the three prototypes.
The laboratory door was suddenly pushed open, and a cold wind and rain poured in.
Wang Ai stood at the door wearing a raincoat, followed by the warehouse manager.
He didn't come in; he just stood at the doorway, his gaze sweeping over the three square boxes on the table, a wide, undisguised smile of sarcasm and malice spreading across his lips.
"Mingda engineers, still busy?"
Wang Ai's voice sounded particularly jarring amidst the rain.
"The exercise is tomorrow. How are the preparations going for the three prototypes that Director Wang requested?"
Wang Ai deliberately dragged out her words, her gaze sweeping over Ming Zhao and the three boxes like a venomous snake!
"Tsk tsk... Look at this, the casing looks like it was chewed by a dog. Can this thing be called a communicator? Don't let it go to the training ground tomorrow and not be able to utter a single word. That would be a real mess! I'd like to see how Dean Zhang will protect you then."
Wang Ai paused, her voice suddenly turning cold, carrying a blatant threat.
“Mingzhao, it’s not too late to admit defeat and say you were just fooling around. Don’t wait until tomorrow in front of the military commander and lose face completely. The consequences… won’t be as simple as just packing your bags and getting out.”
"Even if your husband is Commander Howard, he can't keep your job."
Cold rain dripped from the brim of Wang Ai's raincoat, splashing onto the cement ground at the laboratory entrance, leaving tiny droplets.
The laboratory was deathly silent, save for the sound of the pouring rain outside and the faint hum of the oscilloscope.
Upon hearing Huo Hua's name, Su Xuan secretly glanced at Ming Zhao.
Mingzhao's brow twitched when she heard Huo Hua's name.
Mingzhao slowly turned around.
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